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Th find the mean of a data set, you add up all the values in the data set and divide this sum by the number of data values. For example, the mean for the data set 2, 5, 6, and 7 is given as 2 plus 5 plus 6 plus 7, which is 20. You divide this sum by number of values in the data set, which is 4 to get 5 as the mean.

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to find the mean of a set of numbers you have to find the total sum of the data divided by the number of addends in the data.


Why can't you find the mean of numerical data?

One reason I can think of why you might not be able to find the mean of numerical data would be if there were missing data points.


Can you find the mean of qualitative data?

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when there are extreme values in the data


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