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Year 9 Mean, Median, Mode and Range Worksheet — Level 1 — 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 1 — Practice Set 4 — Answers

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

1.Data: 1, 5, 7, 8, 9. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 6; median 7; mode no mode; range 8

  1. Mean: 30 ÷ 5 = 6
  2. Ordered: 1, 5, 7, 8, 9 → median 7
  3. Mode: no mode
  4. Range: 9 − 1 = 8
2.Data: 3, 5, 14, 10, 18. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 10; median 10; mode no mode; range 15

  1. Mean: 50 ÷ 5 = 10
  2. Ordered: 3, 5, 10, 14, 18 → median 10
  3. Mode: no mode
  4. Range: 18 − 3 = 15
3.Data: 14, 11, 7, 6, 12. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 10; median 11; mode no mode; range 8

  1. Mean: 50 ÷ 5 = 10
  2. Ordered: 6, 7, 11, 12, 14 → median 11
  3. Mode: no mode
  4. Range: 14 − 6 = 8
4.Data: 15, 3, 2, 18, 7. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 9; median 7; mode no mode; range 16

  1. Mean: 45 ÷ 5 = 9
  2. Ordered: 2, 3, 7, 15, 18 → median 7
  3. Mode: no mode
  4. Range: 18 − 2 = 16
5.Data: 20, 18, 18, 13, 11. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 16; median 18; mode 18; range 9

  1. Mean: 80 ÷ 5 = 16
  2. Ordered: 11, 13, 18, 18, 20 → median 18
  3. Mode: 18
  4. Range: 20 − 11 = 9
6.Data: 12, 18, 18, 8, 19. Find the (a) mean, (b) median, (c) mode and (d) range.

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

  1. Mean: 75 ÷ 5 = 15
  2. Ordered: 8, 12, 18, 18, 19 → median 18
  3. Mode: 18
  4. Range: 19 − 8 = 11
7.Data: 5, 3, 3, 6, 18. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 7; median 5; mode 3; range 15

  1. Mean: 35 ÷ 5 = 7
  2. Ordered: 3, 3, 5, 6, 18 → median 5
  3. Mode: 3
  4. Range: 18 − 3 = 15
8.Data: 7, 17, 14, 8, 9. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 11; median 9; mode no mode; range 10

  1. Mean: 55 ÷ 5 = 11
  2. Ordered: 7, 8, 9, 14, 17 → median 9
  3. Mode: no mode
  4. Range: 17 − 7 = 10
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