Can someone please guide me. I have each SKU and would like to get total count and standard deviation. I can get sum but for 7months of data how can I get total count and standard dev?
Break the standard deviation equation into its parts and solve them bit by bit:
Standard Deviation = Square Root of ( ( each X minus average X) / number of values ).
I prefer to break complex line item formulas into components ... each () is typically a separate line item and they get pulled together into a single simpler formula.
Average X = (sum of X / number of values)
Number of Values = sum of (If In relevant time range? then 1 else 0)
In relevant time range? = boolean time filter
Here is another thread that shows a more elegant way to achieve this in a single line item:
https://community.anaplan.com/t5/Best-Practices/STANDARD-DEVIATION
The link to the Anaplan Community provided returns a 404 error for me but Anaplan does have a Descriptive Statistics model that provides insight into how you can perform calculations such as finding the standard deviation. I'm attaching a screenshot for anyone else that stumbles onto this question but doesn't want to download the model
Cheers,
Marc
@mweinzim24
I get the same errror. Time for a new best practice I suppose.
To help answer @danishnoorani1 question and extend @hendersonmj answer, I posted this step-by-step DISCO method to calculate the standard deviation.
https://community.anaplan.com/t5/Anaplan-Platform/Standard-Deviation-Using-no-timescale-and-without-current-period/m-p/73141#M14752
In this method though I break one of the PLAN tenants. I have a back and forth calculation between the transaction module and the calculation module because the dimensions are the same. But it's pretty straight forward.
Hope it helps.
Thanks @JaredDolich !
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