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ergocorp
Helper II
3 years ago
Solved

Average, Upper and Lower Control Limits on Measure Based Graph

Hi all, I've trawled the web for how to do this, and despite my formula requirements being even simpler, I cant work out how to do this.

 

I have a line chart that is simply a measure on the y-axis and my weeks on the x. 

 

The measure is a simple sum of the gross value every row has.

 

Disclaimer: I add a new workbook every week, so I have formula on my date table to calculate the week number. 

 

I am trying to start by calculating the average, let alone the upper and lower control limits.

 

Any ideas?

 

I then have to do the same where the line plots the COUNT of the gross value column. 

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