Stay updated with the latest breaking news, live updates, photos, videos and top trending stories from India and around the world across politics, economy, sports and more on The Economic Times.

This article was originally published on Built In by Eric Kleppen. Variance is a powerful statistic used in data analysis and machine learning. It is one of the four main measures of variability along ...

Variance measures how spread out data points are from their average (mean). To calculate it, find the mean first, then measure how far each data point deviates from that mean, square those deviations, ...