Cross Tab-Need to Exclude Zero Values from Average Formula

Posted on 2011-03-08
Last Modified: 2012-06-27
Trying to calculate Average of Annualized Salary Change amounts but it is off because zero amounts are being calculated in the average.  Any help would be most appreciated.
Question by:twkyoscr
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LVL 19

Expert Comment

ID: 35070899
Show details of your crosstab setup and the calculations your using.
LVL 101

Expert Comment

ID: 35071216
The only way to affect summaries in the cross tab is to not include the 0 data in the report.  I assume th e0s are because of lack of data for a given row or column.


Author Comment

ID: 35071455
The problem that I am having with the cross tab is that I cannot seem to keep a placeholder for null values.  What I ended up doing is writing a union (in Peoplesoft Query) to also inlcude those that had no adjustment so that the report would still have each manager listed.  I excluded those that had no adjustment from the counts, but the average is now the issue.  I created a running total which I entered a formula under evaluate to do the following: {@Annualized ChgAmtRnd}<>0
However the average amount is correct for some managers and off slightly for others.  
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LVL 101

Assisted Solution

mlmcc earned 100 total points
ID: 35072476
NULL is not the same as 0 unless you are converting it.

The cross tab uses the information presented so if there is no data it converts that to 0 and then unfortunately uses it in the summary.

The only way I can see around this is to build your own manual cross tab and calculate the average s without including the NULLs

LVL 35

Accepted Solution

James0628 earned 400 total points
ID: 35106631
You might be able to do this using a weighted average, instead of a regular average.  If you don't want the average to include the records where {@Annualized ChgAmtRnd} = 0, you could create a formula like this:

if {@Annualized ChgAmtRnd} <> 0 then

 Then make your summary "Weighted average with", and select that formula for the "with" part.  The idea is that all of the records where {@Annualized ChgAmtRnd} is not 0 will be given a weight of 1, so they'll be included in the average (with an equal weight), and the records where {@Annualized ChgAmtRnd} is 0 will have a weight of 0, so they'll be excluded from the average.

 This could work.  It depends a lot of what's in the {@Annualized ChgAmtRnd} formula.


Author Closing Comment

ID: 35217402
Thanks everyone for your assistance!  After applying your suggestions and tweaking the data a bit, I ended up with the correct results!
LVL 35

Expert Comment

ID: 35221514
You're welcome.  Glad I could help.


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