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Different results for =average & averageifs for same data range

  1. #1
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    Different results for =average & averageifs for same data range

    Moderators, if this is in the wrong place, or is in any way of not being in compliance, please let me know and I will gladly make any corrections that I need too. I value the forum and wish to do thing correctly.

    I have a large column of numbers, sorted by date, that i used to get the average by manually averaging the date range that I needed.

    I thought I could use an averageifs with date ranges but when I do, the answers differ (though they are correct on some ranges.)

    In the spread sheet attachment I get an answer of 467.95 for a manual average, and 472.37 when I use averageifs. (=AVERAGEIFS(B:B,A:A,">="&$F$5,A:A,"<="&$F$6))

    I am a novice and most likely making a simple error, but I cannot locate anything out of place.

    Thank you
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    Re: Different results for =average & averageifs for same data range

    The problem occurs because you column A is Date and Time so the comparison of DATE-only vs Date & Time will give erroneous results.

    Insert a new column (B) and in B2

    =INT(A2) copy down which give Date only

    change your AVERAGEiFS

    =AVERAGEIFS(C:C,B:B,">="&$F$5,B:B,"<="&$F$6)

    and you will the same result as the C2:C23 AVERAGE

  3. #3
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    Re: Different results for =average & averageifs for same data range

    You forgot to take time into consideration.

    01/07/2017 doesn't include 01/07/2017 03:05pm since time adds value too. Change your formula to =AVERAGEIFS(B:B,A:A,">="&$E$5,A:A,"<="&$E$6+1)

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