![]() I want to know the variance of this data. ![]() Here I have data of new users joined in every month on my website. If you want to know what is variance and when to use which variance formula, read the whole article. If you just want to know how to calculate variance in Excel use the formulas as described below. Excel has two formulas VAR.P and VAR.S to do so. We won't need to use these formulas to calculate variance in Excel. Variance is the squared value of standard deviation. If speaking mathematically, Variance is an average of squared difference of data points from the mean of the data. It is not the most trusted statistic and we don't use it alone to predict future value. ![]() Variance is often referred to as error value. ![]() The variance tells how much data can vary from the mean of the data set. We use the variance of data to estimate the range of future value in series.
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