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 ...

He used a one-sample t-test to see whether the vendor was delivering as promised. The results of the t-test are shown below.

Assumptions for the one sample t test are as follows: The data in the variables of interest should be continuous.This means they take any numeric value, such as age in years, weight in kilograms or ...

Two-Sample t-Test Calculator (Pooled-Variance) This web calculator conducts a pooled-variance t-test for a difference between two populations' means when standard deviations are unknown and equal. The ...

A t-test is a statistic method used to determine if there is a significant difference between the means of two groups based on a sample of data. The test relies on a set of assumptions for it to ...

This short course provides an overview of statistical analyses useful for comparing the means for one or more samples. The statistical training will include the discussion of the one sample t-test, ...