Have you ever thought of the humble SUM function as a secret weapon for advanced analytics? Most Excel users see it as a basic tool for adding numbers, but what if I told you it could do so much more?

There might be some numbers you're missing when summing it up.

Q. I receive regular spreadsheets with all of our company’s accounts, departments, employees, and balances, and I have to subtotal the amounts by accounts, departments, etc. I have been manually doing ...