Originally Posted by sfmoored

Thank you wickedchew!
This is brilliant!

If I wanted to do the below, is that possible? This assumes the Response Index can be greater than 100 (but never less than 0):
If Open Rate or Click rate is above the average, I'd like for the amount each is above the average to contribute more to the index (thus each can provide more than 45 to the Response Index). And if the Unsubscribe rate is below the average, I'd like for the amount it is below the average to contribute more to the index (thus it can provide more than 10 to the Response Index).

The sample could be: Open Rate 28.00%, Click Rate 4.10%, Unsubscribe Rate 0.01%. Averages remain the same as the earlier sample.