The AVEDEV function in Excel

 

The AVEDEV function in Excel is a statistical function that calculates the average of the absolute deviations of data points from their mean. The AVEDEV function measures the amount of variation or dispersion in a set of data.

The syntax for the AVEDEV function is as follows:

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=AVEDEV(number1,[number2],...)

where:

  • number1: The first number or range of numbers for which you want to calculate the average deviation.
  • number2: [Optional] Additional numbers or ranges of numbers for which you want to calculate the average deviation. You can include up to 255 arguments.

The AVEDEV function returns the average of the absolute deviations of the specified numbers from their mean. The result is a measure of the amount of variation or dispersion in the data set.

Here's an example of how to use the AVEDEV function:

Suppose you have a data set of exam scores for a class of students, and you want to calculate the average deviation of the scores from their mean. You can use the AVEDEV function as follows:

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=AVEDEV(A2:A20)

In this example, the AVEDEV function calculates the average deviation of the scores in cells A2:A20 from their mean.

Note that the AVEDEV function calculates the absolute value of the deviations, so negative deviations are treated as positive deviations. Also, the AVEDEV function is a measure of the amount of variation or dispersion in the data set, but it is not a robust measure of variation because it is sensitive to outliers. To get a more robust measure of variation, you may want to use the MEDIAN function together with the MEDIAN absolute deviation (MAD) function.

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