Lesson 1
Why data spread matters
See why looking only at averages can mislead you.
Start2 Micro-lessons
Micro lesson 1
Same average, different realityMicro lesson 2
Spot hidden differencesLesson 2
How range works
Learn the logic behind calculating range.
Start2 Micro-lessons
Micro lesson 1
Finding the extremesMicro lesson 2
Calculating range step by stepLesson 3
Using range correctly
Know when range helps and when it fails.
Start2 Micro-lessons
Micro lesson 1
When range helpsMicro lesson 2
When range misleads