Two-sample t-test

By Danny Kaplan | April 12, 2015

T-test Little App: Weight versus self-described level of activity in the National Health and Nutrition Evaluation Survey. Click here to launch.

The t-test Little App connects the t-interval to the .

  • Length of confidence intervals as a function of n.
  • Examine variation in the means and intervals by taking new samples from the population.
  • Use the measuring stick to look at differences in means, lengths of confidence intervals, overlaps between confidence intervals, etc.
  • Explore robustness of p-value by selecting new samples from the population.
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