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Year 9 Mean, Median, Mode and Range Worksheet — Level 2 — Practice Set 4 — Answers

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Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · Mean, Median, Mode & Range

Year 9 Mean, Median, Mode and Range Worksheet — Level 2 — Practice Set 4 — Answers

Order the data first. Show your working for each measure.

1.Data: 8, 7, 19, 13, 1, 5, 10. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 9; median 8; mode no mode; range 18

  1. Mean: 63 ÷ 7 = 9
  2. Ordered: 1, 5, 7, 8, 10, 13, 19 → median 8
  3. Mode: no mode
  4. Range: 19 − 1 = 18
2.Data: 8, 11, 7, 19, 1, 2. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 8; median 7.5; mode no mode; range 18

  1. Mean: 48 ÷ 6 = 8
  2. Ordered: 1, 2, 7, 8, 11, 19 → median 7.5
  3. Mode: no mode
  4. Range: 19 − 1 = 18
3.Data: 18, 11, 4, 15, 14, 15, 14. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 13; median 14; mode 14 and 15; range 14

  1. Mean: 91 ÷ 7 = 13
  2. Ordered: 4, 11, 14, 14, 15, 15, 18 → median 14
  3. Mode: 14 and 15
  4. Range: 18 − 4 = 14
4.Data: 1, 18, 10, 14, 18, 8, 2, 9. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 10; median 9.5; mode 18; range 17

  1. Mean: 80 ÷ 8 = 10
  2. Ordered: 1, 2, 8, 9, 10, 14, 18, 18 → median 9.5
  3. Mode: 18
  4. Range: 18 − 1 = 17
5.Data: 10, 5, 8, 11, 5, 17, 5, 3. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 8; median 6.5; mode 5; range 14

  1. Mean: 64 ÷ 8 = 8
  2. Ordered: 3, 5, 5, 5, 8, 10, 11, 17 → median 6.5
  3. Mode: 5
  4. Range: 17 − 3 = 14
6.Data: 12, 10, 14, 20, 16, 12. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 14; median 13; mode 12; range 10

  1. Mean: 84 ÷ 6 = 14
  2. Ordered: 10, 12, 12, 14, 16, 20 → median 13
  3. Mode: 12
  4. Range: 20 − 10 = 10
7.Data: 4, 3, 19, 13, 19, 9, 10. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 11; median 10; mode 19; range 16

  1. Mean: 77 ÷ 7 = 11
  2. Ordered: 3, 4, 9, 10, 13, 19, 19 → median 10
  3. Mode: 19
  4. Range: 19 − 3 = 16
8.Data: 8, 11, 18, 18, 16, 19. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 15; median 17; mode 18; range 11

  1. Mean: 90 ÷ 6 = 15
  2. Ordered: 8, 11, 16, 18, 18, 19 → median 17
  3. Mode: 18
  4. Range: 19 − 8 = 11
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