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Year 9 Mean, Median, Mode and Range Worksheet — Level 1 — Practice Set 3 — Answers

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

Year 9 Mean, Median, Mode and Range Worksheet — Level 1 — Practice Set 3 — Answers

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

1.Data: 1, 4, 1, 16, 3. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 5; median 3; mode 1; range 15

  1. Mean: 25 ÷ 5 = 5
  2. Ordered: 1, 1, 3, 4, 16 → median 3
  3. Mode: 1
  4. Range: 16 − 1 = 15
2.Data: 8, 2, 2, 9, 4. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 5; median 4; mode 2; range 7

  1. Mean: 25 ÷ 5 = 5
  2. Ordered: 2, 2, 4, 8, 9 → median 4
  3. Mode: 2
  4. Range: 9 − 2 = 7
3.Data: 4, 11, 9, 12, 19. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 11; median 11; mode no mode; range 15

  1. Mean: 55 ÷ 5 = 11
  2. Ordered: 4, 9, 11, 12, 19 → median 11
  3. Mode: no mode
  4. Range: 19 − 4 = 15
4.Data: 9, 2, 11, 20, 3. Find the (a) mean, (b) median, (c) mode and (d) range.

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

  1. Mean: 45 ÷ 5 = 9
  2. Ordered: 2, 3, 9, 11, 20 → median 9
  3. Mode: no mode
  4. Range: 20 − 2 = 18
5.Data: 7, 15, 20, 14, 9. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 13; median 14; mode no mode; range 13

  1. Mean: 65 ÷ 5 = 13
  2. Ordered: 7, 9, 14, 15, 20 → median 14
  3. Mode: no mode
  4. Range: 20 − 7 = 13
6.Data: 15, 13, 16, 12, 14. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 14; median 14; mode no mode; range 4

  1. Mean: 70 ÷ 5 = 14
  2. Ordered: 12, 13, 14, 15, 16 → median 14
  3. Mode: no mode
  4. Range: 16 − 12 = 4
7.Data: 9, 9, 16, 1, 15. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 10; median 9; mode 9; range 15

  1. Mean: 50 ÷ 5 = 10
  2. Ordered: 1, 9, 9, 15, 16 → median 9
  3. Mode: 9
  4. Range: 16 − 1 = 15
8.Data: 18, 13, 14, 4, 16. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 13; median 14; mode no mode; range 14

  1. Mean: 65 ÷ 5 = 13
  2. Ordered: 4, 13, 14, 16, 18 → median 14
  3. Mode: no mode
  4. Range: 18 − 4 = 14
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