Video guide
Two-sample t test for difference of means
Selected because it explains a common t-test workflow from an educational source and avoids overstating p-values. It supplements the calculator's two-sample mode by connecting means, variability, and the test statistic.
Source: Khan Academy · Published 2018-03-29
Open original on YouTubeWhy selected: Selected because it explains a common t-test workflow from an educational source and avoids overstating p-values.
What it adds: It supplements the calculator's two-sample mode by connecting means, variability, and the test statistic.
How to use it: Use the calculator to compute the test, then use the video to review what the difference of means test is asking.
Open T TestT Test: The lesson covers one design and does not replace checking assumptions, study design, multiple testing, or practical effect size.
Calculator Suite curates and contextualizes this public lesson but does not own, publish, or endorse every statement in the original video.