Anxiety can often make these related conditions worse, so talk with a mental health care professional if anxiety begins to interfere on a daily basis.
In probability theory and statistics, the variance of a random variable is a measure of its statistical dispersion, indicating how far from the expected value its values typically are. The variance of a real-valued random variable is its second central moment, and it also happens to be its second cumulant.
Definition of variance. 1 : the fact, quality, or state of being variable or variant : difference, variation yearly variance in crops. 2 : the fact or state of being in disagreement : dissension, dispute. 3 : a disagreement between two parts of the same legal proceeding that must be consonant.