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.
What is variance analysis? Variance analysis is a key element of performance management and is the process by which the total difference between flexed standard and actual results is analysed. A number of basic variances can be calculated. If the results are better than expected, the variance is favourable (F).