| APPLET | SOURCE | DESCRIPTION |
|
| Confidence intervals for a mean (the impact of not knowing the standard deviation) | Prentice-Hall applets (West) | Generates 100 samples for a specified sample size and distribution (normal or skewed, mean and standard deviation) and shows visually the 95% confidence intervals for the mean based on both Z and T, indicates and tallies the percentage of both that contain the actual mean for comparison. more |
| Confidence Intervals | Schneiter | Generates samples to estimate percentage of balls in a population that are red, can specify confidence level and one of three sample sizes and can generate one or 100 confidence intervals. more |
| Proportion Estimate Experiment | Virtual Laboratories in Probability and Statistics (Seigrist, Duehring) | Simulates many confidence intervals for the proportion, outputting the intervals numerically and indicating whether each contains the proportion, shows histogram for the percentage containing proportion compared to theoretical, allows user to change type of interval (two sided or one sided), population shape and parameters, sample size and alpha level. NOTE: xhtml files may not run in all browsers. more |
| Simulations and Demonstrations > Confidence Interval on a Proportion | Rice Virtual Lab in Statistics (Lane) | For specified n, p, and number of intervals, simulates samples and calculates the percentage of 90%, 95% or 99% confidence intervals that contain the actual proportion. Can compare actual percentage to presumed to evaluate validity of normal method for constructing intervals. more |
| Confidence Intervals for a Proportion | Prentice-Hall applets (West) | Generates 100 intervals for a specified n and p and computes and shows visually the 95% and 99% confidence intervals for the proportion, indicates and tallies the percentage that contain the actual proportion. more |
| Confidence Intervals (Change All) | Statistical Java (Dorai-Raj) | For specified n, p (pi), and confidence level (80%, 90%, 95% or 99%), simulates samples, visually displays intervals for the proportion, and calculates the number and percentage of time that the intervals contain the actual proportion. See http://serc.carleton.edu/sp/cause/datasim/examples/17731.html for an independently authored activity to go along with this applet. more |
| Confidence Interval for Variance | VESTAC: Java Applets for the Visualization of Statistical Concepts | Generates a specified number of intervals for the variance using various confidence levels and samples of different sizes from a normal population, visually displays both samples and intervals, tallies percentage of intervals that capture the actual variance, can also do side by side comparison of two processes, for example, using different sample sizes. more |
| Variance Estimate Experiment | Virtual Laboratories in Probability and Statistics (Seigrist, Duehring) | Simulates many confidence intervals for the variance, outputting intervals numerically and indicating whether each contains the variance, shows histogram for the percentage containing variance compared to theoretical, allows user to change type of interval (two sided or one sided), population shape and parameters, sample size and alpha level. NOTE: xhtml files may not run in all browsers. more |