help with averages formula

[Jesse Blanchard]

sorry if this is a dumb question, not too familiar with excel: I am working
on a report that, in part, is tracking how long patients stay in the spinal
cord injury center according to their injury (for example: paraplegic,
tetraplegic).

I need to get the average for the number of days for patients with each type
of injury. I have two columns, one with the number of days they stayed and
the other with a dropdown list of injury type (para, tetra). How do I get the
average for only those patients that have a para injury type?

 

[John]

Hi Jesse
Try this array formula
=AVERAGE(IF(B13:B22="tetra",A13:A22)) you need to enter it with Ctrl> Shift

Enter

HTH
John

 

[John]

Hi Again
Just in case you're not familiar with ARRAY formulas
You must enter that formula by pressing CTRL-SHIFT-ENTER to activate
the array. you'll see curly braces { } around your formula if you do it
right .
Everytime you edit that formula, you must press Ctrl-Shift-Enter for it to
work.
Regards
John