The fix for the disposable formula habit in Excel is already on your screen. At the very bottom of your Excel window is a ...

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?

By dividing (/) the running total by the sequence number, Excel returns the average of all the values from the start to the ...