Confidence interval program ti 84

In this example, we are told that the population standard deviation is thought to be 14 minutes and we have a large enough sample size. Therefore, a z-interval can be used to calculate the confidence interval. This is really only useful for small data sets. Please make sure to read the explanation of how to interpret intervals in general. It is very easy to misunderstand what they truly mean!

Note — there are many other ways to write this interval. When the population standard deviation is unknown, we will use a t-interval to estimate the mean.

Using a t-interval on the calculator has almost the same steps as using a z-interval, as you will see below. For a statistics project, a student samples 37 high school teachers in her community and records how many years they have worked in education. In her sample, the average number of years was Notice that in this example, the standard deviation is coming from the sample. Therefore, this is not sigma the population standard deviation but instead s the sample standard deviation.

Great for biostatistics. Cochran Q This file computes information associated with Cochran's Q test. Please read accompanying documentation for more information. Correlation Coefficient Enter data into two lists and it will give you the correlation coefficient.

Coefficient of Contingency This program will compute Pearson's Coefficient of Contingency after a chi-square test is run. Use matrix A as the observed values and run a chi-square test to store the test statistic in memory. The user may enter in statistics or a data list.

Coin ADV. There aren't that many areas in Maths where Coin Toss is required But for the Times You Do need one Its got everything you can do with a coin I can think of At the moment, you can toss up to 4 coins at once. Quit: Not just an ordinary "Quit" It restores your functions too. Restores Maths and Graphic Settings to Default Perfect to run this quick, easy prgm just before an exam. Coin Flip Flips a coin and draws a cumulative graph of the flips. Nice and fun Statistics program. Coin Probability Quick and easy- tell it how many times you want to flip a coin, and it will tell you how many times each side came up.

Coin Toss Simulator v1. Then it will output a line graph, showing the percentage of heads after each toss. The main purpose of this program is to demonstrate the Law of Large Numbers, but you can also use it to impress your Statistics teacher! Probability Flip Perfect for those boring physics classes, Probability Flip is a simple program where you enter the number of flips that you want the coin to perform and then the calculator simulates the coin flip.

The percentages are shown in progress as the coin flips. It may not be a game but it could be more fun to watch than your boring teacher :. Concordance This program computes the concordance of ranked data.

Please read the accompanying documentation for a full description. Conditional Expectation This program will compute the conditional expectation of a discrete random variable. The user inputs the requried information be aware that lists are used heavily. The program outputs the conditional expectation. Great for advanced stats and probability. Conditional Probability This program will compute the conditional probability of a discrete random variable.

The user inputs the required information be aware that lists are used heavily for this program. The program outputs the conditional probability. Conditional Variance Discrete This program will compute the conditional variance of two discrete random variables.

Confidence Bands This program will compute the confidence bands for E y with a regression line. It is reserved to lines for now. The user enters in the data, the confidence level, the number of intervals to generate so that points may be connected and the center location of these intervals. The program does the rest. See the documents for further info. The intervals are also shown on a graph so you can see the difference the confidence level makes.

Continuous Uniform This program considers the continuous uniform density. The user inputs the left and right bounds for the density and can obtain measures, plots and values on the pdf, cdf, mgf, and inverse cdf. Cooks Distance This program computes Cook's Distance for one independent variable in ordinary linear regression. Please read the documentation for a full description. Correlation Matrix This program will compute a correlation matrix.

Enter the information as lists and the program does the rest. Great for statistics students. COTEZ This program lets you know the z cote of a data from a list of datas or with the average and the variance. Partially in French. Count 5 Method This program performs the count 5 method for two lists to compare the population variances. It is an alternative to the F test. The user inputs the two lists and the signficance level A-level in the program.

The program outputs the test statistic, the critival value and the decision to make. Great for statistics. Covariance Matrix This program will compute population and sample covariance matrices as well as sample correlation matrix.

Great for Statistics students. Covariance This program computes sample and population covariances. Cramer's V This program computes Cramer's V test statistic to determine the degree of association between variables after running a chi-square test of independence. The user must enter the information of the observed values in matrix A and also must run the chi-square test on the calculator to have the values stored properly.

Cramer von Mises Test 1 This program will perform a 1-sample Cramer von Mises goodness of fit test comparing a data set to either normal, Student t, chi-square, F or uniform. Critical Points Cells This program will compute the probability for a number of balls to occupy a specified number of cells, or given a probability, it will determine the minimum number of balls needed to occupy cells.

Critical Values for r This program will compute critical values for r when conducting tests on correlations. Critical Values Spearman This file contains two programs, one for finding critical values on a TI for Spearman's rank correlation coefficients and one for the TI The TI program uses the invT command.

Complete A. It takes the majority of the functions and formulas that are required for the A. Test, performs them, and shows all of the work.

No other program in existence is this useful! I have used it throughout the school year and I have aced every test without any thought. It could be a little more user friendly and now warns you when a list needs to be used, but it is a great program that you will all love.

Cumulative Frequency Polygon Calculates and plots the cumulative frequencies of a data list. Curve Fitting Calculates the polynomial of least degree that passes exactly through any number of data points Lagrange interpolation. Coefficients are stored in list and matrix form for your mathematical convenience and pleasure. CVe This Program replaces the need for the z-table and t-table.

It finds the critical value CV for a given 1. It also shows the graph of the area. Critical Values for Multiple R This program will compute the critical values for a multiple regression coefficient. Damped Harmonic Motion Regression This program will compute a least-squares regression for a data set resembling damped harmonic motion. Degrees of Freedom This program computes the degrees of freedom for a 2-Sample T-Test by using a conservative measurement as well as the formula. It will also round the result of the formula accordingly.

DESCRIPTe The Program describes a list of measurements giving the count, the sum, mean, median, standard deviation, variance, range, mode, the box plot and the z-score of each measurement.

What's special about it is that it uses a multiply with carry generator, instead of the built in random generator, and this mwc-generator has much better properties for generating random numbers. Dice2 Rolls two virtual dice and gives you a nice little histogram of the data. AAA dice this is a good math program that lets you roll dice. It is better than most because you can choose the amount of dice, the amount of times thrown, and the number of sides on the dice.

Dice Programs This is a collection of programs that either roll dice or use data from rolling dice. This will work good for interpreting statistical data for dice. Difference Kruskal Wallis This program will compare two average rank values and conduct a chi-square test to determine if the difference between these two are significant.

Great for business statistic students studying nonparametric methods. Discrete Covariance This program computes covariance via expectation formulas.

Discrete Random Number Generator There are two programs in this zip file, one for the 84 it uses the randIntNoRep command and one for the 83 which does not use it, but a programmable substitute from TI-Developer.

Either of these programs will compute a listing of random numbers from a user provided probability model. See the accompanying documentation for a full description of the program. Discrete RV Measures This program produces the mean, variance and standard deviation for a discrete random variable.

Great for beginners in statistics as well as programming. The user only inputs two lists: the values the random variable takes on and the probability of taking on these values. The program computes the rest. Discrete Uniform Distribution This program gives information about the discrete uniform distrubtion.

It will generate plots, measures and values on the pdf and cdf curves. Discrete Variance This program computes variance for discrete RV using the expectation formula.

Empirical Rule Then it finds the percentages, which you can compare to It outputs bits, bats and nats. Great for statistics or information theory. Gaussian Error Function: erf and erfc A set of programs the computes the erf x and erfc x. Unlike similar programs available here, the result given by these programs is accurate to all 10 decimals displayed by the calculator.

Gaussian Error Function This program calculates the error function of the inputed parameter. The program calculates the value iterativly, and is fairly accurate. Comments are Welcome. Erlang Distribution Generator This program constructs a list of random variables that have a gamma distribution or an Erlang distribution. Erlang Random Number Generator This program acts as a "random" number generator for the Erlang distribution.

Exponential Confidence Interval This program will find a confidence interval for the maximum likelihood estimate for the parameter.

Exponential Distribution This program will do the following: 1 It computes values and graphs the exponential pdf. Expreg This is another great program i have created for my statistics class. It does both exponential and power regression growth.

You simply tell it where the infromation is and it does everything for you. But i do suggest that if you don't know a little about exponetial or power regression not to use this program cause it will confuse you more than you were in the first place. Extreme Standard Deviate This program works with the extreme standard deviate when given population information. This program will find the mode s of a list, and do it quickly.

F-interval This program will compute the confidence interval for the ratio of two population variances based on the sample variances using the F-distribution. The user inputs the information and receives the point estimate for the ratio as well as the lower and upper bound for the interval. F-Distribution This program will work with the F-distribution. It will supply information about the pdf, the cdf and measures.

These measures include the mean, mode, approximate median, variance, std deviation, skewness and kurtosis. Fences Calculator This program calculates the fences of a set of data to determine the outliers given a Q1 and Q3.

This program is easy to use and saves time on stats tests. Fences This program computes the fences for outliers using the mild outlier rule and the extreme outlier rule. Finite Population Correction Factor This program computes the margin of error or the sample size for a proportion using the finite population correction factor. First Order Exponential Smoothing This program will perform a first order exponential smoothing technique for forecasts. It also outputs the mean square error for such forecasts.

Great for business statistics students. The user may evaluate values on the PMF or obtain measures about this distribution. List Frequency Count This programme computes the frequency of repetitive elements in a specific list Defined by the user. Check out the screen shots. After the program runs, the unique data is then displayed in L1 with frequencies in L2 and relative frequencies in L3.

The original data is moved to L5 and sorted in L6. Frequency Polygon This program will construct a frequency polygon. The user inputs the data list and the number of classes. The program will give the choice of frequency polygon, histogram or both. Great for elementary statistics. Friedman Test This program conducts the Friedman test from non-parametric statistics.

The program outputs information. Please read the accompanying documentation for further details. FTest Utility This program performs a one-sided F-Test for determining the utility of a general linear model. Can input data or statistics for this program. Levi's Free Throw Probability Program Calculates the probability of making a certain number of free throws. Input your free throw percentage and number of attempts. Gamma Distribution This program will produce information concerning the gamma distribution along with graphs.

It will also produce the variance matrix so that you may determine the variance for each estimate. It also gives degrees of freedom and the variance estimate for the population. Gives its mean, standard deviation, and variance, and 3. Geometric Mean Pretty simple program. Finds the geometric mean of two numbers. It works. Geometric Mean A very simple, yet reliable, geometric mean program. Geometric RNG This program is a random number generator for the geometric distribution. Geometric Distribution This program will compute probabilities for the geometric distribution under the rule that we are investigating the number of trials until the first success, not the number of failures until the first success so the support are the natural numbers.

It will also compute the mean, median, mode, standard deviation, variance, skewness and kurtosis. The user may also plot a histogram, a graph of the cdf and a frequency polygon for a specified distribution. Glejser This program performs a Glejser test for heteroscedasticity. Great for econometrics. Geometric Mean Calculates the geometric mean of a series of numbers. Pretty idiot proof, though I'm probably under-estimating the idiot population. GOF arbitrary This program will compute a chi-square goodness of fit test for an arbitrary discrete distribution.

GOF binomial This program will perform a chi-square goodness of fit test assuming the distribution is binomial. GOF Normal 2 This program, unlike my previous one, will perform a GOF test for normal distributions when we use sample statistics rather than having the population parameters specified.

It will output the df N-3 this time , the test statistics and the p-value. GOF normal This program will perform a chi-square goodness of fit test for data that is assumed to be normally distributed.

GOF poisson This program will perform a chi-square goodness of fit test with the hypothesized distribution a poisson. GOF uniform This program will perform a chi-square goodness of fit test under the hypothesis that the distribution is uniform evenly distributed. Goldfeld Quandt Test This is test of unequal variances common in econometrics. First enter the width boundaries in L1 and L2 the frequencies in L3.

Start the Program to display facts about the distribution. Hartley This program will perform a Hartley test for testing homogeneity of population variances an extension of the F-test. Please read the enclosed documentation for a full description.

It suggests the number of bars, or classes, K for your data, but you can override this. Also, the width range is given corresponding to your choice of K. You enter width W from the range. A whole number width is best, if possible. You will see the boundaries of each bar, the frequency and relative frequency of each class.

The user may enter in data or statistics. It also gives the user the option to see the graph. Hyperbolic Secant Distribution This program deals with the hyperbolic secant distribution. It works with the pdf, cdf, mgf, cf, inverse cdf and outputs values like the mean, median, variance, etc.

The graph of the distribution, and 4. Hypothesis Test Expected Y This program will perform a hypothesis test on the expected values of the output variable. Great for business students studying statistics. Hypothesis Test Multico This program performs a hypothesis test for multicollinearity between two independent variables. Additionally, it will give you the number of outliers and what they are. Index1 This program will compute Laspeyres and Paasche indices.

Great for business stats students. Infinite Rolls This program can simulate rolling a die with any number of sides any number of times. Updated version includes a histogram. Great for second statistics courses or experimental design. If the data is from a sampling distribution, the standard error of the mean is also found. Inverse Chi-Square 2 This program is an alternate version of the inverse chi-square program that uses a formula rather than solves an equation. The user inputs the sample size and the alpha-level.

It will find the score to the alpha-level corresponds to the area right of the value. Inverse Chi-Square This program computes the critical values for the chi-square distribution. Just enter the area to the right of the critical value and the degrees of freedom this is to be consistent with current tables. InverseChiSquarev2 Contains two versions of computing inverse chi square functions, one will output just right-sided scores for the chi-square distribution and the other will output both left scores and right scores for an assigned probability.

Inverse F This program will compute inverse F values. The user enters the area to the right of the value under the F distribution the degrees of freedom for the numerator and denominator respectively. The program will output the score. It runs slow, but it is small. Inverse T command Similar to the invNorm command on TI Plus calculators, this one determines the t-value for an area left under a t-distribution.

Inverse Triangular Scores This program will compute inverse triangular values for a triangular distribution. The user inputs the the endpoints and the location of the mode and the percentage of data left of the score.

The program computes the score and will draw a picture of the situation. Inverse Uniform This program computes the score for a uniform density. The user may input the endpoints or the mean and standard deviation of the uniform density and then the amount of are LEFT of score.

The program outputs the score and a diagram of the situation. Great for elementary statistics and probability students.

Inverted Chi-Square Distribution This program works with the inverse or inverted chi-square distribution. It will produce values on the pdf, cdf and measures. Graphs of the pdf and cdf are also produced. Inverted Chi-Square RNG There are two files in this folder, one for generating a single random value based on the inverted chi-square distribution and another that will generate a histogram with 99 values showing an approximation to the pdf.

Inverse T distribution This finds the function value of the t-distribution given the degrees of freedom and the p-value or the area of the tail. Inverse T Because the TI does not have an Inverse T function for use in statistics, I decided to make a program that calculates it for you via a 'back door'.

Version 2: Used a different backdoor approach. This one is much slower, but will return more accurate results, and should not have domain errors. The test uses the skew and kurtosis measures moment formulas. The program will produce the test statistic, the skew, the kurtosis, the sample size and the p-value it uses chi-square with 2 degress of freedom and this is an asymptotic result.

Stat Stuff This program returns, with the push of a button, the mean, Standard Deviation, and much more! It even equaits an inputted Z-score. Finds the above values from a list, inputted either, from a premade location, or right on the spot. You could do all these things by pencila nd paper, one by one on your calculator Please read the accompanying documentation for details.

Kendall's Tau This program will compute Kendall's tau for ranked data. KMeans This is a program for applying K-means algorithm to two attributes and two groups. Basic intro problem for such an algorithm. Please read over documentation for details.

Great for intro data science. Great for data science or statistics. The user inputs the ranks of the data or the statistics gathered from the data. The program will output the test statistic and p-value. Kurtosis Test This program performs a test of non-normality using the kurtosis of a data set. Included are lists used in the program, so please download these as well if you use the program. Laplace Distribution This program outputs information about the Laplace or double exponential distribution.

Laplace Histogram This program will compute random numbers according to the Laplace distribution and plot the histogram. Law of Large Numbers This is a short program for demonstrating the law of large numbers.

Users enter in a list of data and receive a plot of the number of the data value versus the average of values up to and including that particular value.

Can be useful for classroom demonstrations. LDA This program performs linear discriminant analysis for two classes. Please read over the documentation for details. It outputs the classification of a prediction only. Great for small demonstrations.

Least-Squares Polynomial Fit This program will fit a polynomial of higher degree to a data set. The calculator's pre-programmed commands stop at fourth degree polynomials, this program allows you to choose the degree. Levene This program will perform a modified Levene test as an alternative to the F-test. Linear Contrast This program works with the concept of linear contrast in statistics.

Please read the documentation for further information. Linear Regression Perpendicular Offsets This program will compute the linear regression using perpendicular offsets instead of vertical offsets. Line Regression Solver Just enter in your points and the program will graph it for you and show you the best fit line. LinReg2 This program will compute a linear regression when given statistics on a data set instead of a data list.

It will also compute the deviations of data point has from the mean. In the lists you will see each actual y, the predicted y, the error and relative error of each y. This program will also compute the confidence interval for the y-intercept as well as the slope of the line whereas the TI program only does the slope.

LinRegTTest 2 This program will conduct a t-test on the slope of the least-squares regression line with the added feature that the hypothesized slope is not zero.

The LinRegTTest command assumes this, but this program does not. List Manipulator Input how many numbers you have in a particular list, then input the numbers themselves, then pick an item from the menu to get goin'! Make Sure I Receive Credit! List Information This program will display information minimum, maximum, mean, standard deviation, variance, how many numbers there are, and mean about the list that you enter.

It contains the Intro, Conditions, Mechanics, Conclusion and tips. Logistic distribution This program works with the logistic distribution. Please read over the documentation for a description. Great for data science and statistics. Lognormal Distribution This program will graph the pdf of a lognormal distribution. It will also give values for the cdf function left, right or between. A graph of the cdf can be available but it takes a little time.

This program will also output measures associated with the lognormal distribution. Lognormal Distribution Generator This program will output a histogram for N lognormally distributed random variables. Lognormal RNG This is a random number generator for the lognormal distribution. Line Squared Linear Regression Give the Program the needed info and it will calculate the line of best fit for you.

Mahanobis Distance This program will compute the Mahanobis distance and pooled covariance matrix for 2 groups of 2-D data. Manimo Use this prog random instead throwing a penny to choose between 2 2 to infinite choices. The user inputs the ranks of the data values and the program outputs the test statistic and p-value. Marginal Conditional Distribution This program will produce a marginal or a conditional distribution for a two-way table.

This program will perform the test using a data list or statistics. It will also compute the confidence intervals if you have a data list or statistics. If you run a test it will produce the test statistic, the p-value and if you entered in a significance level, it will also produce the decision to make.

If you compute a confidence interval, it will provide you with the sample mean, the standard error not standard deviation , the interval as well as the margin of error. The user enters in the information in matrix format and the program outputs probabilities for successes, test statistic and p-values. It also checks to see if the conditions are satisfied to perform the test.

Multidimensional Scaling Multidimensional scaling MDS is used to display high-dimensional statistical data on a two-dimensional screen. Different techniques are used for different types of data. This package includes correspondence analysis, principal components analysis, biplot axes, classical scaling, unfolding and Procrustes analysis. A user's guide is included.

Knowledge of programming isn't required. Absolute Deviation Measures This program produces the mean absolute deviation and the median absolute deviation for a data set.

The user inputs a data set and the program outputs the mean absolute deviation as well as the median absolute deviation absolute deviation is minimized when the median is used, similarly the standard deviation is minimized when the mean is used. MeanFinder MeanFinder is a program that finds the mean average of a specified number of numbers. This program is bytes in size. More information in the Readme. Mean Measures This file contains two programs, one is for computing the Tukey Trimean for the measure of the center of a data set and the other is the Trimmed Mean.

The user enters in a data set and the percentage of data to "trim" from both ends. Mean Prediction Interval This program computes the prediction interval for the mean rsponse value rather than an individual response value. The user enters in the lists, the x0 value and the confidence level. The program outputs the interval, the x0 value, the y-value used in the estimation, the standard error and the degrees of freedom. Mean Square Error This program will compute the mean square error among data lists for a statistical calculation.

Just enter in the information and the program will output the mean square error. Great for second level statistics students. Means Formulas v1. Median Confidence Interval This program will compute the confidence interval for a median. Mills Ratio This program plots Mills Ratios for several different types of distributions. Minimum Sample Size Hypergeometric This program will compute the minimum sample size needed if sampling from a hypergeometric distribution.

List Mode This program finds the mode of a list. You enter the numbers either directly or as a defined list, for example LN. The numbers go into L1, which is reduced to one element, if there is a mode. L2 and L3 are also used. Mode finder v1. This little program quickly finds the mode of L1, even if the mode is more than 1 number. It is helpful, and has no known errors other than memory. The user enters in the data list and the program outputs the mode.

This program will output multiple modes if they exist. Mode 3-In-1 This program adds the capability of finding the mode of a set of numbers, the mode of a particular number that the user can specify and also the mode of a range of numbers. When finding just the mode of a list, it will produce a new list of all unique modes in order and also a matrix of each mode in order from most frequently found to least.

I could only find programs that gave only the standard mode, but nothing that ordered all the numbers in a list of unique numbers, so ta-da, I made this!

I'm sure you will find this useful, as the TI and TI do not have this functionality. The user will input two lists and it will take the difference L1 - L2 and ask for the alternative hypothesis and whether or not you wish to have a drawing. Multinomial Distribution This program computes the probability, expected value, variance, covariance of two variables and the correlation between two variables for a multinomial distribution.

The user enters the number per group in L1 and the probabilities for these groups in L2. Multi R This program computes the coefficients of correlation and determination adjusted values as well when performing a multiple linear regression.

This type of generator is known for its good properties. Text versions in the file. Also enclosed a text file on the subject by George Marsaglia. NCT 2 This is a very short program for computing values on the noncentral student T cdf. N-Sided Die Probability This program computes the probability of obtaining the ith face on the ith roll of an n-sided die. It will also handle the infinity case as well.

Negative Binomial Distribution Generator This program will generate 99 random numbers according to the negative binomial distribution and plot a histogram for this list. Negative Hypergeometric Distribution This program works with the negative hypergeometric distribution.

It will compute probabilities, the mean, mode, approx median, variance and standar deviation. It will also produce histograms, frequency polygons and CDFs. Noncentral Chi Square Distribution This program works with the noncentral chi-square distribution. It will produce graphs of pdf's, cdf's and measures associated with the noncentral chi-square distribution. Noncentral Chi Square Histogram This program will generate a histogram of 99 random variables generated according to the noncentral chi-square distribution.

The user inputs the degrees of freedom and the meand and variance of the normal distribution the variates are to be chosen. Noncentral F Histogram This program will generate a histogram based on random numbers from a non-central F distribution. NCT This program works with the noncentral t-distribution. It can produce values for the pdf, the cdf about 5 digit accuracy for the default and measures for the mean, standard deviation and variance. The interval for the mode is also computed.

A graph for the pdf it takes a very long time to generate though can also be produced. Nonparametric Tolerance Limits This program works with nonparametric tolerance limits. It produces the minimum sample size needed for one sided and two sided situations. The result is given as the z-score of the boundary, and actual boundary. Normal Probability Plot This program will produce a normal probability plot according to how Michael Sullivan describes it in his textbook on Statistics.

The Y-coordinates will be different than what the calculator uses, but the overall pattern is similar. This program has the added feature of producing the linear correlation coefficient for such data and displaying it in the upper left corner of the plot.

The statistical plot on the calculator does not do this. Normal v1. Number 2 Test This program computes the number of objects to sample in order to detect a defective item. The user inputs the lot size, the number suspected of being defective and the probability desired to detect at least one defective item. The program outputs the number to sample and the probability associated with sampling this many items. Great for statistics, probability and survey classes.

Average 1. This program can only average a few numbers at a time, but it might be useful for something. Like all the rest of my files, this one is compressed using the Bzip2 format and requires WinZip 9. TI Number Experiments This file contains 3 programs that can be used for multiple statistics and probability related projects, and includes a number game as well.

Operating Characteristic Cuve Binomial This program will plot an operating characteristic curve for a fixed sample size using a binomial distribution. The x-axis is the probability of defects while the y-axis is the binomial probability.

It will also produce a specific probability when given the acceptance level, the sample size and the probability of a defect. OC Hypergeometric This program works with the operating characteristic curve with a hypergeometric distribution.

OC Poisson This program works with the operating characteristic curve with a Poisson distribution. The ODDS against, and in favor, of an event with a known probability of happening, and 2.

Odds This program will compute the odds in favor, odds against, probability of success and probability of failure given the information. Ogive This program will plot a cumulative ogive and a relative ogive. Great for introductory statistics. It will help you study for the AP Statistics test and may vary well help with any other basic level statistics course. It includes an IQR solver, tests of significance, types of errors, the 7 step approach to answering questions to assure full credit, forumulas, and just about everything else you might need for the AP test.

Also program features a looping menu to ease use. Pareto This program computes values associated with the Pareto distribution. It will give values on the pdf as well as the graph, it will compute probabilities on the Pareto distribution left of a value, right of a value, or between two values. It will also compute measures: mean, median, mode, variance, standard deviation, skewness and kurtosis. It can also graph the failure rate using a Pareto distribution.

Park Test This is a small program for a Park test in econometrics. Just enter in the x-data list and the y-data list and the program will do the rest. Partial Correlation This program will compute partial correlations among several independent variables. Reserved for comparing two for now. Pascal's Triangle Probability Say you want to calculate the odds of getting a in my bowling game. What would you do? Using probability and Pascal's Triangle, you can find the odds for or against something happening.

P-chart This program will produce a p-chart from quality control.