Custom Fields for Average and RSD - Advanced

I am trying to build custom fields to calculate average and %RSD across several custom fields for accuracy studies. Each spike level has a different field based on CConst1,2,3 so that I can use for multiple components in one sample set.

Basic setup of samples:

Label   # replicates   Spike Level         Recovery custom field
U1                  3                  1                     RecoveryCConst1
U2                 3                  2                     RecoveryCConst2
U3                 3                  3                     RecoveryCConst3

I need to calculate the overall average and %RSD across these three custom fields. I can't do it in report columns since the difference Recovery custom fields won't show up in a single column.

What syntax can I use to have AVE or RSD functions use different custom fields based on injection?

I've tried these but did not return any values...all other fields were working.

AVE(U1..(RecoveryCConst1)&U2..(RecoveryCConst2&U3..(RecoveryCConst3))

AVE(EQ(Label,U1)*RecoveryCConst1+EQ(Label,U2)*RecoveryCConst2+EQ(Label,U3)*RecoveryCConst3)

Answers

  • For the average one, you could add the 3 CFs together and divide by 3. 

    So, (CF1+CF2+CF3)/3