How to determine the highest occurrence?


E

Eric

Does anyone have any suggestions on how to determine the date?
There is a list of date under column A, and a given number 3 in cell B1
I would like to determine the highest occurrence +/- 3 days

If I select the date 11-Jan-08, the range will be between 8-Jan-08 and
14-Jan-08.
For the occurrence on 11--Jan-08, it should return 2 in cell C1.
Does anyone have any suggestions on how to determine the highest occurrence?
Thanks in advance for any suggestions
Eric

04-Jan-09
09-Jan-09
11-Jan-09
18-Jan-09
20-Jan-09
22-Jan-09
23-Jan-09
24-Jan-09
24-Jan-09
24-Jan-09
24-Jan-09
26-Jan-09
27-Jan-09
05-Feb-09
06-Feb-09
12-Feb-09
17-Feb-09
....
 
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S

Shane Devenshire

Hi,

This question is unclear, what do you mean by highest occurance? what do
2009 dates have to do with the 2008 dates?

Cheers,
Shane Devenshire
 
S

Shane Devenshire

Hi,

To add to my previous questions, do you want Excel to calculate when you
select a cell? To get this to happen you will need to add code. If instead
you enter a date in a cell, in the following example, cell A1, I think the
following formula will work in most cases. It assumes the the date run from
A2:A18:

=LARGE(FREQUENCY(A2:A18,ROW(INDIRECT(A1-3&":"&A1+3))),2)

But I still don't know what 2008/2009 dates have to do with this.

Nevertheless, if this helps click the Yes button

Cheers,
Shane Devenshire
 
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E

Eric

I need to reword my statement,

On 4-Jan-08, it should return 1 in cell C1 for range between 1-Jan-09 and
7-Jan-09, which include 04-Jan-09 only.

On 09-Jan-08, it should return 2 in cell C3 for range between 5-Jan-09 and
12-Jan-09, which include 09-Jan-09 and 11-Jan-09.

On 11-Jan-08, it should return 2 in cell C3 for range between 8-Jan-09 and
14-Jan-09, which include 09-Jan-09 and 11-Jan-09.

....

On 24-Jan-08, it should return 8 in cell C8 for range between 21-Jan-09 and
27-Jan-09, which include 22-Jan-09, 23-Jan-09, 24-Jan-09, 24-Jan-09,
24-Jan-09, 24-Jan-09, 26-Jan-09, 27-Jan-09

Does anyone have any suggestions on how to determine the occurrence?
Thanks in advance for any suggestions
Eric
 

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