Average Formula?

[Guest]

Hello,
I want to calculate the average amount of a growing column A. Column A is
the amount and column B is the corresponding average of total column A until
that row. How is the formula look like?

A B
2 2
3 2.5
1 2
5 2.75
4 3

Thank you.
choo

 

[Steve]

In B1, enter =Average(A1:A$1)

Copy and paste it down B1 or use the fill handle.

 

[Guest]

choo:

try,

i = 1
Do While Cells(i, 1) <> ""
Cells(i, 2).Formula = "=AVERAGE(A1:A" & i & ")"
i = i + 1
Loop

 

[Guest]

Hi Steve,

Is there a different between =Average(A1:A$1) and =Average(A$1:A1)?

choo

 

[Steve]

Both will do what you want.
..

Hi Steve,

Is there a different between =Average(A1:A$1) and =Average(A$1:A1)?

choo