Variance and Covariance
Understand variance, covariance, and the difference between positive and negative correlations.
We'll cover the following...
We'll cover the following...
Variance is the expectation of the squared deviation of a random variable from its mean. It measures how far a set of (random) numbers are spread out from their average value.
Covariance is a measure of the joint variability of two random variables. If the greater values of ...