Variance is a powerful statistic used in data analysis and machine learning. It is one of the four main measures of variability along with range, interquartile range (IQR) and standard deviation.

Since the variance is a squared value, it can be difficult to interpret compared to other measures of variability like standard deviation.

The basic mathematical concepts of standard deviation and variance are useful to investors. Compare variance versus standard deviation and calculate each.

Standard deviation is a statistic measuring the dispersion of a dataset relative to its mean. It is calculated as the square root of the variance. Learn how it's used.

The standard deviation is calculated by finding the mean, calculating the variance and taking the square root of the variance.