Finding variance using Pandas 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 ...

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 measures how data is dispersed relative to its mean and is calculated as the square root of its variance. The further the data points are, the higher the deviation.

The mean would be the result of (25 + 30 + 35 + 20) / 4 or 27.5 rounded to 28. To find the variance, first find the difference between the mean and each set of data.