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.
variance. one of the measures of the dispersion of data; the mean squared deviation of a set of values from the mean. additive genetic variance. that portion of phenotypic variance which is due to the additive effect of genes (V A).ne of the measures of the dispersion of data; the mean squared deviation of a set of values from the mean. additive genetic variance. that portion of phenotypic variance which is due to the additive effect of genes (V A).