# Average of time spent monthly getting DIV/0 error

K

#### Kelway07

Teethless Mama, your formula worked for most part but I am getting DIV/0

I am trying to get an average of time spent each month on an activity. The
spreadsheet has 12 months and only 3 of the months are populated.I think it
is still counting months 4-12 in my average. As each months time is entered
I
want it to recalculate the average.
:

Try this elegant formula:

=AVERAGE(IF((\$M\$88:\$AT\$88>0)*(MOD(COLUMN(\$M\$88:\$AT\$88),3)=1),\$M\$88:\$AT\$88))

ctrl+shift+enter, not just enter

S

#### Shane Devenshire

Hi,

Try this

=IF(SUM(IF((\$M88:\$AT88>0)*(MOD(COLUMN(\$M88:\$AT88),3)=1),\$M88:\$AT88))=0,"",AVERAGE(IF((\$M88:\$AT88>0)*(MOD(COLUMN(\$M88:\$AT88),3)=1),\$M88:\$AT88)))

or in 2007:

=IFERROR(AVERAGE(IF((\$M88:\$AT88>0)*(MOD(COLUMN(\$M88:\$AT88),3)=1),\$M88:\$AT88)),"")

both array entered.

K

#### Kelway07

Shane thank you! One last snag - this is calculating minutes. I want to
present in Hours, where would I "/60" in the formula?