Firstly if column A has DAY and B has VALUE, it seems you want average of
five b-values
In C2 (assume row 1 has headers) =AVERAGE(B2:B6)
In C3 =NA() (so you can chart all of column C)
Copy C3 to C4 : C6
Select C2:C6 and copy down the column

Day Value Average
14 0.04 =AVERAGE(B2:B6)
14 0.04 =NA()
14 0.79 =NA()
14 0.27 =NA()
14 0.05 =NA()
remove this blank row
21 0.35 =AVERAGE(B7:B11)
21 0.42 =NA()
21 15.18 ....etc
21 15.77
21 12.23
remove blank row
28 25.0
28 11.6
28 89.0
28 36.7
28 60.2
best wishes
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"Ezra" wrote in message
ups.com...
Hi all,

I want to plot the averages from a large dataset. I want to obtain the
average of a group of values grouped in 5 rows at the time, but when I
copy it down, it skips the data one row down, instead of five. For
instance I use
=Average(A1:A5), and when I copy it down I want it to calculate
=Average(A6:A10), but instead it shows =Average(A2:A6). Does anybody
know how to do this?

My data looks like this (without the spaces between the lines):

Day Value
14 0.04
14 0.04
14 0.79
14 0.27
14 0.05

21 0.35
21 0.42
21 15.18
21 15.77
21 12.23

28 25.0
28 11.6
28 89.0
28 36.7
28 60.2

I need the average of the five values of day 14, 21, and 28

Thank you.
Gerardo