Avg % above 0%

How can I get the average percentage of a collumn of percentages without it
including any 0%. e.g. A1=0% A2=100%, A3=70% if it averaged the 3 cells it
would be 57% but if it only averaged A2:A3 it would be 85%. I may have
several cells in the collumn which is showing 0% so how do I average just
those above 0%. Can you use Avg if is there such a formula?

Basically I have a collumn of attendance data which I am trying to get the
avg of. sometimes it will be 0% because its a non expected attendance and
sometimes it will be because they did not attend though they should have
done. hope this make sence. So in essence sometimes I want to add the 0% in
the avg and sometimes I don't how do I diferentiate between when I do and
when I don't
--
Wendy Fillingham

Hi,

Here's 2 ways, first an ARRAY formula

=AVERAGE(IF(A1:A1000,A1:A100))

This is an array formula which must be entered by pressing CTRL+Shift+Enter
'and not just Enter. If you do it correctly then Excel will put curly brackets
'around the formula {}. You can't type these yourself. If you edit the formula
'you must enter it again with CTRL+Shift+Enter.

or a non array solution

=SUM(A1:A100)/(COUNTIF(A1:A100,"0")+COUNTIF(A1:A100,"0"))

--
Mike

When competing hypotheses are otherwise equal, adopt the hypothesis that
introduces the fewest assumptions while still sufficiently answering the
question.


"Wendy" wrote:

How can I get the average percentage of a collumn of percentages without it
including any 0%. e.g. A1=0% A2=100%, A3=70% if it averaged the 3 cells it
would be 57% but if it only averaged A2:A3 it would be 85%. I may have
several cells in the collumn which is showing 0% so how do I average just
those above 0%. Can you use Avg if is there such a formula?

Basically I have a collumn of attendance data which I am trying to get the
avg of. sometimes it will be 0% because its a non expected attendance and
sometimes it will be because they did not attend though they should have
done. hope this make sence. So in essence sometimes I want to add the 0% in
the avg and sometimes I don't how do I diferentiate between when I do and
when I don't
--
Wendy Fillingham

Wendy,
In the event you have Excel 2007
=AVERAGEIF(A1:A10,"0")
best wishes
--
Bernard Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme

"Wendy" wrote in message
...
How can I get the average percentage of a collumn of percentages without
it
including any 0%. e.g. A1=0% A2=100%, A3=70% if it averaged the 3 cells
it
would be 57% but if it only averaged A2:A3 it would be 85%. I may have
several cells in the collumn which is showing 0% so how do I average just
those above 0%. Can you use Avg if is there such a formula?

Basically I have a collumn of attendance data which I am trying to get
the
avg of. sometimes it will be 0% because its a non expected attendance and
sometimes it will be because they did not attend though they should have
done. hope this make sence. So in essence sometimes I want to add the 0%
in
the avg and sometimes I don't how do I diferentiate between when I do and
when I don't
--
Wendy Fillingham