Although we can write a function to calculate variance in less than 10 lines of code, there is an even easier way to find variance. You can do it in one line of code using Pandas.

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.

Standard deviation can be greater than the variance since the square root of a decimal is larger (and not smaller) than the original number when the variance is less than one (1.0 or 100%).

Learn the standard deviation formula, how to calculate it, and its importance in data analysis. Step-by-step guide with examples.