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Calculating Averages



 
 
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Old July 30th, 2007, 09:22 PM posted to microsoft.public.access.reports
Rene Hernandez
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Posts: 14
Default Calculating Averages

Good afternoon John,

It worked great!!! You're a live saver!!!

Thanks for all your help and patience.

Rene
--
Rene Lazaro


"John Spencer" wrote:

Try

Avg(IIF(IsNumeric([ScoreA]),Val([ScoreA]),0) + IIF(IsNumeric([Score
b]),Val([Score B]),0) + IIF(IsNumeric([Score C]),Val([Score C]),0))

That will average in a 0 if all the scores are in the row are NA.

If that is not acceptable then you will have to write a more complex
expression that might look something like
Avg(IIF (IsNumber(A) + IsNumeric(B) + IsNumeric(C) = 0,
Null,
IIF(IsNumeric([ScoreA]),Val([ScoreA]),0) + IIF(IsNumeric([Score
b]),Val([Score B]),0) + IIF(IsNumeric([Score C]),Val([Score C]),0))
--
John Spencer
Access MVP 2002-2005, 2007
Center for Health Program Development and Management
University of Maryland Baltimore County
..

"Rene Hernandez" wrote in message
...
Good afternoon John,

Please help.

Thank you.
--
Rene Lazaro


"Rene Hernandez" wrote:

I am trying to calculate an average on the following

[score A]+[score B]+[score C]+[score D]

These are text fields with validation rule

="NA" or Between 1 and 5

I know that the Avg and Sum functions omit Null values but how can i get
it
to omit "NA" and what is the function for calculating the average.

I try to calculate the average using

=Avg([Score A])+Avg([Score B]), etc.

but it does not work.

Please help.
--
Rene Lazaro




 




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