Friday, September 23, 2016

Solution to Error: Counting Combinations across multiple columns

Counting Combinations across multiple columns

I've got a group of data (about 200 rows long) with the following headers:
Student Name  Grade Level  1st Choice  2nd Choice  3rd Choice  4th Choice
The four columns for 1st through 4th choices will contain information as students select between 6-8 course offerings and they will choose four of them ranked 1 through 4.  I order to schedule the courses (as only 2 of them will be scheduled at any one period
in the day) I need to determine which 2-course combinations occur most offen.  So, with 6 courses (here I'll call them C1, C2, C3, C4, C5, and C6), I would need to check which of the 15 combinations (6*5/2...C1/C2 is the same as C2/C1) occurs the most often. 
My preference would be to do this through a forumla so that the counts update as the information is updated.  Doing it through a macro would be fairly straight forward but I'm not sure how to even start with a formula for cells to do this.  Any help would
be appreciated!

Anwsers to the Problem Counting Combinations across multiple columns

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If for example you have your table in in A1:F10 where columns C1:F10 have your 4 choices.

Then if you list the possible 15 combinations in say I1 to J15 like:

Then in K15 you can enter formula like:


copied down.

This will list the frequency of each combination....
there will most likely be repeat frequencies...

To list, say the top 3, then in say L1 enter:


copied down 3 cells,

Then in M1 enter:

confirm this formula with CTRL+SHIFT+ENTER not just ENTER
and copy down 3 cells and over to next column to get the combinations of highest frequency.

Windows Error Reporting - To Fix Counting Combinations across multiple columns

  1. Go to Start button.
  2. Open Control Panel.
  3. Go to Windows Error Reporting.
  4. Click on System and Maintenance, then click Problem Reports and Solutions.
  5. Next, click Change Settings located on the left side panel of the Problem Reports and Solutions window.
  6. Select an option to configure how you want Windows to look for a solution to your problems. You may allow Windows to do it automatically or ask you every time to check if problem occurs.
  7. Next, click the Advanced settings link.
  8. Select Off to turn off Error Reporting.

Recommended Method to Fix the Problem: Counting Combinations across multiple columns:

How to Fix Counting Combinations across multiple columns with SmartPCFixer?

1. Click the button to download SmartPCFixer . Install it on your computer.  Open it, and it will perform a scan for your computer. The errors will be shown in the scan result.

2. After the scan is finished, you can see the errors and problems which need to be fixed.

3. When the Fixing part is finished, your computer has been speeded up and the errors have been removed

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