Solved

Excel 2007 - finding mid date in a distribution

Posted on 2011-03-22
7
267 Views
Last Modified: 2012-08-14
I have a spreadsheet of product sales.
This has months as column headers and products as the first row.
The body of data is the sales of each product per month.

I could do with sorting these products by the date when half the sales to-date was reached.

How can this be achieved?
0
Comment
Question by:Beamson
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 19

Expert Comment

by:Arno Koster
ID: 35189639
How do you define the sales-to-date limit ?
is it placed somewhere in a cell (thus dynamic) or is it a static value ?
0
 
LVL 1

Author Comment

by:Beamson
ID: 35189789
Sales to date are the total number of sales across all dates for which there are columns.

See attached file for a basic example.

(In my true data there are thousands of products sold with a distribution of sales over a period of 20 years.)
Example.xlsx
0
 
LVL 19

Expert Comment

by:Arno Koster
ID: 35191766
if you select the data rows (row 2 and below),
on the Data tab, in the Sort & Filter group, click Sort.
select "Month in which midpoint occurs" in Sort By
select "Values" in Sort On
Select "old to new" or "New to Old" in order
click OK

as described in

http://office.microsoft.com/en-us/excel-help/sort-data-in-a-range-or-table-HP010073947.aspx#BMsort_by_a_custom_list
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 1

Author Comment

by:Beamson
ID: 35191881
Finding how to calculate "month in which midpoint occurs" is the key point of my question.  Once there, sorting that column in order is relatively easy.

I can find mean sales, median sales, percentiles and so on for each row but finding the date of the halfway point for each products sales is beyond me.
0
 
LVL 19

Accepted Solution

by:
Arno Koster earned 250 total points
ID: 35192172
you could use matrix functions :

select cell T2
fill in formula, do not use [Enter] but instead [Ctrl]-[Shift]-[Enter]
=SUM(B$1:P$1*B2:P2) / Q2

Open in new window


format the result as a date and it will give you these dates :

September 16, 2010
July 6, 2010
April 16, 2010
March 14, 2010

0
 
LVL 19

Expert Comment

by:Arno Koster
ID: 35192189
please note that this way, you calculate the mathematical average of the sales data. Eg. in the first column this average states that the half-sales point is mid september, while no products have been sold during september.
0
 
LVL 1

Author Closing Comment

by:Beamson
ID: 35193290
I thought this was going to take forever but you solved it quickly with such an elegantly simple formula.  Thanks.
0

Featured Post

Salesforce Made Easy to Use

On-screen guidance at the moment of need enables you & your employees to focus on the core, you can now boost your adoption rates swiftly and simply with one easy tool.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A little background as to how I came to I design this code: Around 5 years ago I designed an add-in that formatted Excel files to a corporate standard, applying different cell colours and font type depending on whether the cells contained inputs,…
You need to know the location of the Office templates folder, so that when you create new templates, they are saved to that location, and thus are available for selection when creating new documents.  The steps to find the Templates folder path are …
This Micro Tutorial will demonstrate how to use a scrolling table in Microsoft Excel using the INDEX function.
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

710 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question