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Making Sense of the Two-Sample T-Test: Supercharge Your Hypotheses Tests

The two-sample t-test is one of the most commonly used hypothesis tests in Six Sigma work. It is applied to compare the average difference between two groups. You use it to determine if the difference ...
Investopedia

T-Test: What It Is With Multiple Formulas and When to Use Them

This calculation can be used for hypothesis testing in statistics Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive ...
Simon Fraser University

Two-Sample t-Test for Population Means

A t-test for population means compares the means between two populations. It is appropriate when the population standard deviations are unknown. This applet allows users to change the distributions of ...
CU Boulder News & Events

T-test, ANOVA, and ANCOVA

This short course will cover the one sample t-test, the two sample t-test, matched-pairs t-test, one-way ANOVA (Analysis of Variance), two-way ANOVA and ANCOVA (Analysis of Covariance). These ...
JSTOR Daily

A Group Sequential t-Test with Updating of Sample Size

This is a preview. Log in through your library . Abstract If the maximum sample size for a group sequential t-test is calculated on the basis of a prior estimate of the variance, power at a fixed ...