sum question in excel 1

[mimi2]

Hello,
Is there a way to sum columns by year ?

these are my columns

year month frequency
2002 1 2
2002 1 1
2001 3 1
2001 12 3

i need to sum the frequency column by year. For example for 2001---> 4
2002---> 3

how can i do that ?
Thanks a lot

 

[SkipVought]

Hi,

as long as your table is sorted by year, use the SUBTOTAL WIZARD -- menu item Data/Subtotal



Skip,
Skip@TheOfficeExperts.com

http://www.TheOfficeExperts.com

 

[mimi2]

Thanks.
i was looking for some sort of code to write but i did it as you said with the wizard.
i would like to learn to do that.

 

[iGrant]

You could also use SUMIF. At the end of your table of data, use the formula

=SUMIF($A$1:$A$20,2001,$C$1:$C$20)

Where your 'year' data is in column A, and frequency is in column C.

This will then total all the frequency items that appear in a row with 2001. Copy the formula for each other year you're interested in.

To make it neater, instead of typing '2001' in the above formula, type 2001 (2002, 2003 etc) in cells, and reference the cells in your formula.