Conditional Formula (TIME): Averaging, Dividing

Mar 5, 2008

I have Excel 97. I'm working on a spreadsheet and I just can't figure out how to create a conditional formula that will look through Column A & B, then add up the related time value (hh:mm) in Column C.

A B C D
Gender Age Start time End Time
Male Adult 23:10 01:45
Female Adult 21:30 03:30
Male Adult 00:15 01:05
Female Juvenile 23:50 00:10


I tried the SUM(IF((A:A="Male")*(B:B="Adult),C:C)) or something like that.

The times seem to have a problem adding up or averaging if the time value exceeds 24:00 hrs. Or if it's computing numbers that some are before and after 24:00 hrs.

Is there some way to create a formula that will result in something like: Of 5 Adult males, the average start time was 23:50 hrs and the average end time was 01:30?

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