J
Jeff
Can anyone devise a formula to summarize monthly data by adding each three
months? That is, I need to add columns A-C, D-F, G-I, etc. I've been doing
this manually, but there must be a better way. Thanks.
months? That is, I need to add columns A-C, D-F, G-I, etc. I've been doing
this manually, but there must be a better way. Thanks.