Qns: What is the difference between variance and standard deviation?
Variance is to measure how far the values are spread in a given data set from their arithmetic mean, while standard deviation is a measure of dispersion of values to the mean
Standard deviation is a measure of how spread out the numbers are while variance is the average of the squared differences from the mean
Variance is the average squared deviations from the mean while standard deviation is the square root of this number.