What this lesson shows
Fixes a mistake
One big value pulls the mean to 7 while the median stays at 4.
The worked example
The lesson works this one step by step: Books read: 3, 4, 4, 5, 19. Then your kid tries one like it on paper.
The steps
- Find the mean
- One far value pulls it
- The median stays
Helping at home
One value far from the rest pulls the mean toward it. The median is the middle value, so it stays with most of the data. When one value is far away, the median tells the typical value better.
If your kid gets stuck
Find both. Which one sits with most of the values?
Watch it with Lux
With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.