26. Covariance. If both variables tend to deviate in the same direction (both go above their means or below their means at the same time), then the covariance ...

Variance refers to the spread of the data set, while the covariance refers to the measure of how two random variables will change together.

Covariance in probability theory and statistics is a measure of the joint variability of two random variables. Covariance matrix · Covariance function · Analysis of covariance · Sample mean

In statistics, variance refers to the spread of a data set. This measurement identifies how far each number in the data set is from the mean.

26 окт. 2015 г. · In this module we will discuss estimates of sample mean and variance, and also discuss the definition of covariance and correlation between two sets of random ...