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The population variance is the average of the sum of the squares of the deviations between the values and their arithmetic mean in a set of data. The user can modify the aggregation mode in the aggregation dialog box to the overall variance. When the overall variance is selected, the "and" option is not optional.

➢Example

Bind 2 columns "market" and "sales" to the table component, and set the aggregation mode of the column "sales" to the population standard deviation. The result is shown in the following figure.