Plus/Minus 2*Standard Deviation IF OR Statement

[sm416]

The formula I have requires a value to fall between an average plus or minus
two times a standard deviation. The formula looks like this
=IF(N165>O165+2*(P165)+OR(N165<O165-2*(P165)),"Flag","").
What I just discovered is that the "flag" will only appear when the value is
greater than the ave + 2*standard diviation, not when it is less than the
average minus 2*standard diviation. I would like to keep the formula
together so I do not have to add additional columns to the sheet. I
certainly could use some clarification to this formula. Each part works as a
seperate formula but not together.

Thank you

 

[bpeltzer]

The OR operator comes before the inputs: OR(A,B) rather than A OR B.
So to flag entries outside two standard deviations:
=IF(OR(N165>(O165+2*P165),N165<(O165-2*P165)),"Flag","")

 

[Rick Rothstein \(MVP - VB\)]

You are not using the OR function correctly, but I wouldn't do what you want
using it anyway. Try it this way...

=IF(ABS(O165-N165)>2*P165,"Flag","")

Rick

 

[sm416]

That did the trick. So simple, but the simple things are the hardest to find!

thanks bpeltzer!