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Excel

The VAR.S function in Excel is used to calculate the standard deviation of a set of data. You can use this function to determine how much variation exists in a set of data. This function is helpful for determining how much variation is expected in future data points.

The syntax of VAR.S in Excel is as follows:

=VAR.S(number_1, number_2, number_3, number_4, number_5)

This function calculates the variance of a series of numbers, given five input numbers. The function will return the variance of the numbers in the number_1 to number_5 range.

One way to use the VAR.S function in Excel is to calculate the standard deviation of a series of numbers. For example, if you have a list of numbers in cells A1 through A10, you can use the VAR.S function to calculate the standard deviation of those numbers. To do so, you would type the following formula into a cell adjacent to the list of numbers:

=VAR.S(A1:A10)

This formula will return the standard deviation of the numbers in cells A1 through A10.

There are a few instances in which you should not use VAR.S in Excel. One such instance is when you have a data set that is not normally distributed. Another instance is when you have a small data set. In these cases, you should use the VAR.P or VAR.I function, respectively.

There are many similar formulae to VAR.S in Excel. Some of these include VAR.P, VAR.E, VAR.A, and VAR.I. Each of these formulae calculates a variance for a given population or sample. They all use a different method to calculate the variance, but they all return the same result.

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