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.
1. deviation-a variation that deviates from the standard or norm; the deviation from the mean. departure, difference, divergence. variation, fluctuation-an instance of change; the rate or magnitude of change. variance, variant, discrepancy-an event that departs from expectations.eviation. n. 1. an act or result of deviating. 2. (Statistics) statistics the difference between an observed value in a series of such values and their arithmetic mean.