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The following TI83/84 programs require a USB cable and software from Texas Instruments so you can transfer them from your computer to your calculator. Instructions for using the TIConnect software with a

Program Name  Description 
Clean *  Clean is a simple program that resets most of the calculator defauts. It does not delete any lists or variables. It turns the axis back on, turns off all functions and statplots, clears the draw and homescreen. 
FLSD*  Fisher's Least Significant Difference. Multiple comparison technique for ANOVA. 
Freqdist **  Freqdist will produce a frequency distribution of data stored in a list. You can specify the class widths along with the starting point. 
Goodfit *  Goodfit is a program written to calculate the chisquared value, along with the pvalue, for a goodness of fit test. The program will read data and theoretical probabilities from two different lists or allow you to directly input the information. 
KWTest*  KWTest is the KruskalWallis test. KruskalWallis is a nonparametric alternative to oneway ANOVA when the assumptions for oneway ANOVA have been violated. Unlike another program for the TI83 floating around with the same name, this program will allow for different sample sizes. 
Normplot *  Normplot is a normal probability plot. The problem with the normal probability plot on the TI83 is (a) it lacks a reference line and (b) it lacks a pvalue. Normplot takes care of the reference line problem ... still working on a pvalue. 
Nrmhst *  Nrmhst stands for NormalHistogram. This program will read your data from a list and produce a histogram, using the TI83's histogram function. It will then superimpose a normal curve. The normal curve is based on the sample mean and standard deviation from your list and then scaled along the yaxis. 
OddsCI *  Computes an odds ratio based on a 2x2 table along with an associated confidence interval. 
PredCI *  Computes a prediction interval for Simple Linear Regression. 
Ranksum ***  Ranksum is Wilcoxon's Rank Sum for 2 independent data sets. It amounts to a ttest computed on the ranks, rather than the actual data. 
RhoCI *  Calculates a confidence interval for the population correlation coefficient. You supply it with the sample correlation, sample size, and alpha. The confidence interval is calculated based on Fisher's ztransformation. 
Samplesz*  Calculates sample size for one sample ztests for the mean and proportions. 
Shadnorm *  Shadnorm will ask for the mean, standard deviation, upper and lower bounds, then produce a normal curve shading in the selected region reporting the area under the curve. It is the same as the TI83's ShadeNorm command with the exception that it properly sets the window size. The problem with ShadeNorm function built into the TI83 is that the student has to figure out Xmin, Xmax, Ymin, and Ymax. Although it may be desirable for a student to do this once or twice, it can be a royal hassle after awhile. 
SignRank ***  SignRank is Wilcoxon's Sign Rank test for two dependent data sets. 
SignTest ***  Nonparametric
Sign test for the median based on data in a list. Requires ZZRank. 
SRCorr *  Spearman's Correlation Coefficient. Calculates Spearman's correlation
coefficient based on data in a list. Requires ZZRank. 
StemPlot **  Provides a stemandleaf display for one or two data sets (back to back). Stempower of 2 corresponds to data of the form 10^2 (100, 123, 217, ...) , stem power of 1 corresponds to data of the form 10^1 (18, 23, 97, 15, ... ), stem power of 0 corresponds to data of the form 10^0 (1.2, 5.1, 3.6, 7.4, ... ), stem power of 1 corresponds to data of the form 10^(1) (0.15, 0.27, 0.31, 0.11, ... ). 
TTestRho *  Completes a hypotheses test using the t statistic for a sample correlation coefficient. 
ZZRank **  Program needed for many nonparametric programs. 
* Denotes programs written by Brian Jean (Taft College, Taft California) and/or David Meyers (Bakersfield College,
Bakersfield California).
** Denotes programs obtained from: http://www.hsu.edu/default.aspx?id=3617 with permission of the author, Michael Lloyd.
*** Denotes programs obtained from the above source and heavily modified by Brian Jean and
David Meyers
The programs written by David Meyers and/or Brian Jean and placed at this website are copyrighted. All programs may be distributed without obtaining permission provided they are distributed free of charge. Written permission is required if any programs are to be included in a book or any electronic format which is to be sold. Likewise, the other programs are also copyrighted. Contact the author at http://www.hsu.edu/default.aspx?id=2538 for distribution permissions.