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 ...

The core use of this statistic is for direct comparison between two samples to check their differences. The t-statistic is a ...

In the Two-Sample Test for Proportions task, you can determine whether two probabilities are the same. The data analyzed in this example are taken from a study measuring the accuracy of two computer ...

Assumptions for the one sample t test are as follows: The t test and the z test share a key similarity in that they are both used to compare means between one or two groups to make inferences about ...

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 ...