![]() ![]() Software like Excel can make this calculation easier. This model is very smooth (showing low variance) but does not. It is calculated by taking the differences between each number in the data set and the mean, then squaring the differences to make them positive, and finally dividing the sum of the squares by the number of values in the data set. For example, the sample mean of a set of data points has higher variance than the sample median. In statistics, variance measures variability from the average or mean. ![]() Investopedia / Alex Dos Diaz Understanding Variance
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