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Paper 1Statistical Techniques3 marks
A small data set of exam scores is given.
Data Table
Exam Scores
The table shows the scores of 10 students in a mathematics exam.
| Student | Score |
|---|---|
| A | 56 |
| B | 62 |
| C | 68 |
| D | 70 |
| E | 72 |
| F | 75 |
| G | 78 |
| H | 80 |
| I | 85 |
| J | 90 |
- a[3]
Calculate the interquartile range (IQR) of the exam scores.
Aim for approximately 3 distinct marking points.
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Answer every part before opening the mark scheme.
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