ExcelBanter - Typing the name and the column and getting an average (for sales people)

Here is the function (array) I just got the hang on:

{=AVERAGE(IF($C$2:$C$80=A84,$I$2:$I$80))}

What it allows me to do is to type "Joe" into cell a84 it will bring up
his average in column I (which will get bigger fairly fast)

What I need it to do is allow me to select the column I want it to take
the average from. The data I have is survey data, checking up on a
particular staff member. Right now, i can find out how anyone is doing
on question one (the I column) but what I need to try and figure out is
how to adjust the data column that is being used for the average.

Right now, I have to replicate this formula 10 times with some
modification so that each question has a cell that you can type a name
into, giving you a percentage result.

Question 1
Enter: [Joe]
93.7%

Question 2
Enter: [Joe]
99.9%

Brackets show what you have to type each time to get a reply.

What I would like is

[S1]
[Joe]
99.3%

2 cells where 1 cell selects the name and the other selects the column
to take the average from. 1 output cell that just displays the current
percentage.

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furryfishus
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