| APPLET | SOURCE | DESCRIPTION |
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| T demonstration | Applets for the Cybergnostics project (West) | Illustrates how shape of t distribution changes as df increase and compares to normal. more |
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| StudentT | Seeing Statistics (McClelland) | Illustrates how shape of t distribution changes as df increase and compares distribution and 2-tailed critical values for 5% to those of normal. more |
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| Student's t-Distribution | Wolfram Demonstrations Project | Illustrates how shape of t distribution changes as df increase and compares to normal, indicating the percent overlap between the distributions. Requires download of Mathematica player and demo itself, good for classroom demonstration. more |
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| T probabilities applet | Statistical Java (Dorai-Raj, Anderson-Cook, Robinson) | Computes area to left or right of a value or between two values on a t with specified degrees of freedom, compares to probability on a normal, and displays both visually. more |
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| Statistics Web, Normal vs. t-dist | Industrial Engineering Dept., South Dakota School of Mines & Technology | Computes critical values of a t distribution and compares to normal critical value for a specified alpha/2 value. more |
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| T calculator -- Graphics Version (T distribution calculator) | Applets for the Cybergnostics project (West) | Computes area to left or right of a value of a t with specified degrees of freedom or computes critical value from specified probability and displays it visually. more |
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| F distribution | A Calculating Companion for Brunett’s Critical Thinking | For various degrees of freedom (up to 25), shows visual display of F distribution and computes tail probabilities from F values or vise versa. more |
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| p-Value Calculator for the Fisher F-Test | DanielSopher.com | Calculates p-values/right tail probabilities from F values with specified degrees of freedom. more |
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