I don't think there is a function for this. Your formula will give the absolute deviation from the mean for each sample. If you really need the absolute average deviation from the mean, you will need to get the average for the result of each value in your sample. That is, if these calculations are in B4:B13, you would need to average these.



Aside: Similarly, AFAIK there is no function to find the range of a sample though it's a common statistic. However, it's easily done with MIN and MAX.