On 12 avr, 23:56, heater wrote:
I have 12 different tabs. *I want to average a number on each tab only if the
number is greater than zero. *So, on tab 1 cell b6=140, tab 2 b6=245, tab 3
b6=0 and so on with b6 on each tab having a number greater than 0 sometimes.

Hello,

Maybe you can try this formula :
=average(Sheet1!B6;Sheet2!B6;...;Sheet12!B6)/average(Sheet1!
B60;Sheet2!B60,...,Sheet12!B60)

Is this right formula ?

HTH