Averaging hours

[Guest]

I want to get the average completion times for each day of the month. The completion times are in military time. Most of the completion times are before midnight, however there are some days that go past midnight, i.e. 01:00. Is there a way to get the average for the month

Thank
Peter

 

[Norman Harker]

Hi Peter!

Averaging times is not essentially different from averaging any
number. Note that Excel times are recorded as a decimal part of a day,
so averaging is simply averaging of these decimals.

However, I suspect that you are wanting to average durations; the time
between starting and completion.

You can work out durations for each project allowing for a span of
midnight using:

=B1-A1+(B1<A1)

To calculate the average you can sum these separate results or you can
use the array entered formula:

=AVERAGE(B1:B30-A1:A30+(B1:B30<A1:A30))
Entered by pressing and holding down Ctrl+Shift and then pressing
Enter

Appears in the formula bar as
{=AVERAGE(B1:B20-A1:A20+(B1:B20<A1:A20))}

--
Regards
Norman Harker MVP (Excel)
Sydney, Australia
(e-mail address removed)

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[Guest]

Norman

What i'm having a problem with is completion times after midnight. I have a column, say L, that has completion times.
21:3
22:1
23:0
01:0
23:1
If I average the column, it comes up with 18:10, which is not right.

 

[Peo Sjoblom]

Use 25:00 for 01:00

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Regards,

Peo Sjoblom

Norman,

What i'm having a problem with is completion times after midnight. I

have a column, say L, that has completion times.