Average Cells In a Column

[KBurns]

Sounds simple but I'm a new user and can't quite figure it out:
I have a column with over 100 numbers listed. I want to average cells A2, A7, A12, A17, A22, A27, etc. for the entire workbook in that one column.
Please use simple words so I get it!

 

[fascsam]

It's easy if you don't mind using another column... a formula can be easily copied down to pull only every 5th number, then you use the average function to get the average. Shoot me an email if that doesn't makes sense..

scott@thefuturesbroker.com

 

[Aladin Akyurek]

On 2002-10-14 15:15, KBurns wrote:
Sounds simple but I'm a new user and can't quite figure it out:
I have a column with over 100 numbers listed. I want to average cells A2, A7, A12, A17, A22, A27, etc. for the entire workbook in that one column.
Please use simple words so I get it!

(1.) Select the vertical range of interest in A.
(2.) Go to the Name Box on the Formula Bar.
(3.) Type Srange (or something more intelligible to you) and hit enter.
(4.) Use the following formula to sum every 5th number in Srange starting from its first value...

=SUMPRODUCT((MOD(ROW(Srange)-CELL("Row",Srange)+0,5)=0)*(Srange))


And for the average...

=SUMPRODUCT((MOD(ROW(Srange)-CELL("Row",Srange)+0,5)=0)*(Srange))/MAX(1,SUMPRODUCT((MOD(ROW(Srange)-CELL("Row",Srange)+0,5)=0)+0))
This message was edited by Aladin Akyurek on 2002-10-14 15:42

 

[Mark W.]

{=AVERAGE(A2,IF(MOD(ROW(A7:A27)-2,5),"",A7:A27))}

Note: This is an array formula which must be entered using the Control+Shift+Enter key combination. The outermost braces, { }, are not entered by you -- they're supplied by Excel in recognition of a properly entered array formula. For more on array formulas see the Excel Help topic for "About array formulas and how to enter them".