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).
Divide by the number of scores (minus one if it is a sample, not a population): The mean of this value is given by 1464/5 = 292.8. The number in between the brackets is the variance of the data. Ï = â[292.8] Square root the total: To calculate standard deviation, we take the square root â(292.8) = 17.11. Ï = 17.11.