BUILD FLUENCY. EARN YOUR ASCENT.Sign in Practise the method.
Developing revision
Revise spread, split stems, graphs, tables and sampling.
Example 1
What is the range of the original scores?
Show worked answer
Answer: 15
- 27−12=15.
Example 2
What is the range of the numbers of books read?
Books read in one month| Books read | Number of students |
|---|
| 2 | 6 |
|---|
| 4 | 3 |
|---|
| 6 | 9 |
|---|
| 9 | 3 |
|---|
| 10 | 6 |
|---|
Show worked answer
Answer: 8
- Use the book values, not their frequencies.
- 10−2=8 books.
Example 3
What fraction of students chose Cycle? Give an exact fraction.
Preferred way to travel to school- Walk15%
- Cycle20%
- Bus25%
- Car40%
Show worked answer
Answer: 51
- Cycle represents 20%
- the fraction is 10020=51.
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