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jjthed
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Quote jjthed Replybullet Topic: Average of a summary field
    Posted: 04 Sep 2014 at 12:40pm
Hello,

I am just wondering how do I get the average of a formula?

For example in designer view:   

group 1   unit price
group 2   formula (price/qty)
group 3   (average of group 2)- don't know how to do it??

What it looks like on the report:

       Unit Price

          $7
          $10
          $7
        ______
          $8

Thanks!

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FrnhtGLI
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Quote FrnhtGLI Replybullet Posted: 05 Sep 2014 at 4:17am
You need a sum of the formula for Group 2, divided by the count of the records displayed in Group 2:

sum({@price/qty} , {@group2})/ count ({@price/qty} , {@group2})
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jjthed
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Quote jjthed Replybullet Posted: 05 Sep 2014 at 5:44am
Thanks for the tip, but it gives me an error saying {@price/qty}cannot be summarized. Any suggestions?
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FrnhtGLI
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Quote FrnhtGLI Replybullet Posted: 05 Sep 2014 at 7:10am
Three Formula Manual Running total to calculate summary.

@INIT_Formula
whileprintingrecords;
global numbervar nPrice/QTY:=0;

@CALC_Formula
whileprintingrecords;
global numbervar nPrice/QTY:=nPrice/QTY + {@price/qty};

@DISP_Formula
whileprintingrecords;
global numbervar nPrice/QTY;

@INIT goes in Group2 Header
@CALC goes on detail line where the summarizing needs to take place
@DISP goes on the line where you want the Average to display.

You can suppress @DISP then create a field that is similar to the previous one:
whileprintingrecords;
global numbervar nPrice/QTY / count ({@price/qty} , {@group2})
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jjthed
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Quote jjthed Replybullet Posted: 05 Sep 2014 at 11:47am
Hrm..... I tried few times, it kept giving me wrong number. I don't use detail section, so the unit price shows in my group 2 section. And this is my first time using a formula doing a manual running total, I am not sure where do I place all the formulas?

Many thanks!!
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jjthed
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Quote jjthed Replybullet Posted: 05 Sep 2014 at 11:49am
Just to add, I know you mentioned that one goes to the header, but I don't have any place to put that...
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