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# Sum weekly data into monthly periods per rule table

Posted on 2014-09-05
Medium Priority
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Trying to figure out simplest way to consolidate weekly data into monthly period dependent on ending week for period per rule table.  Please see the attached file. Example1.xlsx
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Question by:acdecal
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LVL 27

Expert Comment

ID: 40306486
This formula will calculate the sum of the weeks as defined in column C:
D11:  =SUM(OFFSET(OFFSET(\$G\$2,0,MATCH(C10+1,\$H\$5:\$EB\$5,0)-1),0,1,1,MATCH(C11,\$H\$5:\$EB\$5,0)-MATCH(C10,\$H\$5:\$EB\$5,0)))

However, you will need to add columns for weeks 1-6 in order to produce a valid result for month 2 (weeks 7 & 8).  Same for weeks 32 -52

I've attached a modified version of your workbook.

Regards,
-Glenn
EE-Example1.xlsx
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LVL 27

Expert Comment

ID: 40323661
Hi,

Have you had a chance to review and or test my solution?  If so, and it works for you, can you please properly close this question by clicking the "Accept this solution" link above my submission above that answers your question?.  This will help ensure that future searches are meaningful to other EE members.

Otherwise, let us know if you have any other issues.

Thanks,
-Glenn
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Accepted Solution

acdecal earned 0 total points
ID: 40323811
Glenn,
I couldn't use your solution because it required additional data to work.  I solved the problem by using the SUMIFS function.  See attached.
Copy-of-Example1.xlsx
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LVL 27

Expert Comment

ID: 40323834
Good solution!  Glad you were able to figure it out.
-Glen
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Author Closing Comment

ID: 40334215
Came up with better solution.
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