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

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

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

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

1.Data: 5, 5, 11, 19, 15. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 11; median 11; mode 5; range 14

  1. Mean: 55 ÷ 5 = 11
  2. Ordered: 5, 5, 11, 15, 19 → median 11
  3. Mode: 5
  4. Range: 19 − 5 = 14
2.Data: 20, 15, 18, 17, 5. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 15; median 17; mode no mode; range 15

  1. Mean: 75 ÷ 5 = 15
  2. Ordered: 5, 15, 17, 18, 20 → median 17
  3. Mode: no mode
  4. Range: 20 − 5 = 15
3.Data: 9, 6, 1, 9, 5. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 6; median 6; mode 9; range 8

  1. Mean: 30 ÷ 5 = 6
  2. Ordered: 1, 5, 6, 9, 9 → median 6
  3. Mode: 9
  4. Range: 9 − 1 = 8
4.Data: 17, 3, 14, 11, 15. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 12; median 14; mode no mode; range 14

  1. Mean: 60 ÷ 5 = 12
  2. Ordered: 3, 11, 14, 15, 17 → median 14
  3. Mode: no mode
  4. Range: 17 − 3 = 14
5.Data: 14, 11, 11, 7, 2. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 9; median 11; mode 11; range 12

  1. Mean: 45 ÷ 5 = 9
  2. Ordered: 2, 7, 11, 11, 14 → median 11
  3. Mode: 11
  4. Range: 14 − 2 = 12
6.Data: 5, 20, 2, 18, 10. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 11; median 10; mode no mode; range 18

  1. Mean: 55 ÷ 5 = 11
  2. Ordered: 2, 5, 10, 18, 20 → median 10
  3. Mode: no mode
  4. Range: 20 − 2 = 18
7.Data: 16, 16, 12, 4, 2. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 10; median 12; mode 16; range 14

  1. Mean: 50 ÷ 5 = 10
  2. Ordered: 2, 4, 12, 16, 16 → median 12
  3. Mode: 16
  4. Range: 16 − 2 = 14
8.Data: 1, 4, 12, 2, 1. Find the (a) mean, (b) median, (c) mode and (d) range.

Answer: mean 4; median 2; mode 1; range 11

  1. Mean: 20 ÷ 5 = 4
  2. Ordered: 1, 1, 2, 4, 12 → median 2
  3. Mode: 1
  4. Range: 12 − 1 = 11
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