What is the meaning of Samona? How popular is the baby name Samona? Learn the origin and popularity plus how to pronounce Samona
Variance. Variance (Ï 2) is a measure of the dispersion of a set of data points around their mean value. In other words, variance is a mathematical expectation of the average squared deviations from the mean. It is computed by finding the probability-weighted average of squared deviations from the expected value. Variance measures the variability from an average (volatility).
Variance The variance is computed as follows:The variance is the average of the squareddifferences between each data value and the mean.for asamplefor apopulation s 2 m2 =â(x â)N (x i sxi xn 22 1=â ââ 2 () â¢ L.O. 1.2. â¢Rangeâ¢IQRâ¢Varianceâ¢St. Deviationâ¢Coefficient of variation.