How to use averageif function?

问题

I have a following data set. I want to get, in column E, average of column B values , if the sample and gene are same using something like AVERAGEIF function in Excel.

For example, in E2 cell, I want to have the the average of B2 and B7 since they have same value in column C i.e "alpha", and column D i.e "S14".

Here is the screenshot of sample data:

回答1:

You would need AVERAGEIFS()

The Formula would be:

=AVERAGEIFS(B:B,C:C,C2,D:D,D2)

Put it in E2 and copy/drag down.

来源：https://stackoverflow.com/questions/41168399/how-to-use-averageif-function