Understand the idea
The range is maximum minus minimum. Two groups can have the same mean but different spread.
WORKED EXAMPLE
Times 8, 10, 12 have mean 10 and range 4. Times 5, 10, 15 also have mean 10, but range 10.
Watch it step by step
Step 1 of 4Read
Read the labels and values: A: 8, B: 10, C: 12.
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- Read
Read the labels and values: A: 8, B: 10, C: 12.
- Represent
Compare the bars on a scale that starts at zero.
- Calculate
Work through the calculation in the example; result: 4.
- Interpret
Explain what the result means and what it does not establish.
TRY BEFORE CHECKING
Exercises with feedback
MAKE SOMETHING YOU CAN EXPLAIN
Your practical challenge
Compare the two given sets using mean and range. Explain what the shared mean hides.
These ticks are your self-review. They do not automatically assess project quality. Ask an adult or partner to review what you can show.
Use the skill in a new situation
Find two more sets with the same mean and different ranges.