Std Dev Vs Variance. Variance is the mean of the squares of the deviations i e difference in values from the mean and the standard deviation is the square root of that variance. The variance is defined as.
It is the square root of the variance. Variation is described as variance in statistics which is a measure of the distance of the values from their mean. Its symbol is σ the greek letter sigma the formula is easy.
Standard deviation and variance.
Its symbol is σ the greek letter sigma the formula is easy. The standard deviation is a measure of how spread out numbers are. Variance is little or small if the values are grouped closer to the mean. Standard deviation is another measure to describe the difference between expected results and their actual values.
