Variance is a statistical measurement of how large of a spread there is within a data set. It measures how far each number in the set is from the mean (average), and thus from every other number ...

Analysis of variance ... Data is not normally distributed • Comparing the financial performance of two groups with non-normal distributions One-Sample T-Test Compares a sample mean to a known ...

A categorical variable is defined as one that can assume only a limited number of values. For example, a person's sex is a categorical variable that can assume one of two values. Variables with levels ...