| APPLET | SOURCE | DESCRIPTION |
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| Online Descriptive Statistics | Xuru's Website | Calculates 50%, 90%, 95%, 99%, 99.5% and 99.9% confidence intervals for both mean and standard deviation for data that can be entered or pasted in. more |
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| Confidence Interval of a Standard Deviation | GraphPad QuickCalcs | Calculates 90%, 95% and 99% confidence intervals for a standard deviation based on either observations entered one by one, a column of data pasted in, or summary information. more |
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| One sample CI for the variance | Dept of Statistics, Texas A&M University | Calculates confidence intervals for the variance based on summary statistics, nice feature allows a slider to increase or decrease the confidence level one percent at a time. more |
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| Percentage: Estimation & Testing/Exact Confidence Interval Construction and Test of Hypothesis for T | A Collection of JavaScript E-labs Learning Objects (Arsham) | Computes confidence interval for a proportion for finite or infinite populations based on sample size and number of successes. more |
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| Confidence Interval for a Proportion or Count | GraphPad Quickcalcs | Computes 90%, 95% and 99% confidence intervals for a proportion using Wald and exact methods based on a sample size and number of successes. more |
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| The Confidence Interval of a Proportion | Vassar Stats (Lowry) | Calculates 95% confidence intervals for a proportion based on number of successes and trials using Newcombe's methods. more |
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| One sample CI for the proportion (normal approximation) | Dept of Statistics, Texas A&M University | Calculates confidence intervals for the proportion assuming large samples based on summary statistics, nice feature allows a slider to increase or decrease the confidence level one percent at a time. more |
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| Sample Error Calculator | DSS Research, Researcher’s Toolkit | Calculates margin of error for a specified level of confidence from sample size, sample proportion and population size. more |
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