How do I insert a subtotal?

[Guest]

I have an Excel spreadsheed of my service calls entered by date and including
columns for labor, parts, tax and total. I can select all the entries in any
given column and then click on the sigma icon to give me a grand total for
that column but what I really need is the ability to have subtotals for each
column at the end of each month. I am sure there is a way to do this, but I
don't know how. Any help would be appreciated.

Thanks

Ted

 

[Guest]

Ideally, your data would have a column for Month. Data would be sorted by
month, then you could do a Data, Subtotals to add a Subtotal everywhere the
month changes.