| APPLET | SOURCE | DESCRIPTION |
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| Practice True or False Questions Involving Elementary Statistics | Larry Green's Applet Page | Dozens of true/false questions with instant feedback covering descriptive statistics and sampling techniques, graphical displays, probability concepts, confidence intervals and Z, hypothesis testing, regression analysis, chi-square tests and ANOVA. more |
| Box Models | CUWU Statistics Program (Marden) | For dice, coins or user-defined population (box), takes samples, compares empirical distribution to theoretical, shows sample statistics and distribution of the mean and sums, shows long run probabilities. more |
| Sampling SIM software | Tools for Teaching and Assessing Statistical Inference, (Garfied, delMas, Chance) | Generates samples from several different populations, displays samples, sampling distribution of the mean, and confidence intervals. Requires download of SAMPLING SIM software. more |
| Horseshoes | istics.net | Uses an analogy of tossing horseshoes to illustrate how confidence intervals work, user specifies size of horseshoe/interval and simulates tosses which represents attempts to 'capture' the parameter or stick, users can observe that as the size of the horseshoe/interval increases, the chances of capturing the stick/parameter increase but that for any one sample/toss, the stick/parameter may or may not be captured. more
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| Confidence Intervals: Confidence Level, Sample Size, and Margin of Error | Wolfram Demonstrations Project | Shows how confidence intervals and margin of error change as the point estimate, sample size, and confidence level are varied. Requires download of Mathematica player and demo itself. Good for classroom demonstrations. more |
| Confidence Intervals for a Mean | Wolfram Demonstrations Project | Generates 50 confidence intervals and shows what percentage contain the population mean as the population variance, confidence level and sample size change, changing a random seed generates a new set of 50 intervals. Requires download of Mathematica player and demo itself. Good for classroom demonstrations. more |
| Simulating Confidence Intervals for Population Parameter | Rossman/Chance Applet Collection | Generates specified number of intervals for either a mean (using either t or z with population or sample standard deviation) or a proportion for specified confidence level, displays them visually and tallies and indicates on display how many contain the actual mean, also allows user to sort intervals. See independently authored student activity to go along with this applet at http://www.kmlhs.org/faculty/TKUEHL/statistics/Chapter_9/Activity_9_1_9_2.pdf more
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| Simlulating t-intervals for different population shapes | Rossman/Chance Applet Collection | Generates specified number of intervals for the mean (for specified confidence level) using the t-distribution for underlying normal, exponential and uniform distributions, displays them visually and tallies and indicates on display how many contain the actual mean. more |