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A stemplot with 11 levels. The numbers in the stem start at 0, increase in steps of one and end at 10. At level 0 there is one leaf, 7. Level 1 has one leaf, 5. Level 2 has no leaves, while level 3 has two leaves, 3, 5. Level 4 has three leaves, 2, 2, 3. Level 5 has two leaves, 5, 8. Level 6 has three leaves, 4, 6, 8. Level 7 has five leaves, 1, 1, 6, 8, 9. Level 8 has nine leaves, 0, 1, 1, 3, 4, 5, 5, 6, 9. Level 9 has five leaves, 1, 1, 3, 5, 9. Level 10 has two leaves which are both 0. Beneath the stemplot is written n = 33, followed by 0 vertical line 7 represents a score of 7 per cent.

 Exercises on Section 3