Weighted averages with SUMPRODUCT
Work out a weighted average with SUMPRODUCT and SUM, and see when a plain AVERAGE gives the wrong answer.
In this lesson
- AVERAGE counts every value once.
- Percentage weights that add up to 100% need no division.
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Why your formula broke when you copied it
Lock a cell with $ so a formula keeps working when you copy it down.
Beginner · 7 min · Free, with no sign-up
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- A cheat sheet for every lesson you finish.
- Skill
- Math and statistics
- Stage
- Advanced
Where it sits in Math and statistics
- SUM, AVERAGE, MIN and MAX8 min
- MEDIAN and MODE9 min
- Random numbers: RAND and RANDBETWEEN11 min
- Weighted averages with SUMPRODUCTThis lesson10 min
- Percentiles and quartiles10 min
- Totals that ignore hidden rows (SUBTOTAL)9 min
The steps
9 steps: 4 explanations, 3 Do this, 2 questions, then Your turn.
Try a free lesson first
Why your formula broke when you copied it
Lock a cell with $ so a formula keeps working when you copy it down.
Beginner · 7 min · Free, with no sign-up
Do the free lesson on your computer.
Send yourself the link and open it on a laptop or desktop.
On your computer, go tolearnford.com/go/39MP