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Mean Worksheet Generator

Generate free mean worksheets using positive-only, negative-only, and mixed-sign integer data sets with verified answers.

Verified answersGenerated with deterministic math
20 verified problemsSeed 482731
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Worksheet #482731
Statistics practice

Mean

Name Date

Find the mean of each data set.

  1. −29, −18, −11, −24, −13
  2. −3, 23, −1, 25, 8, −10, −21
  3. 14, 19, 8, 1, 9, 3
  4. −15, −18, −9, −26
  5. 19, −13, 22, 8
  6. 18, 17, 30, 2, 28, 29, 16
  7. −18, −9, −17, −28
  8. −3, 8, 4, 3
  9. 10, 26, 12, 4
  10. −29, −2, −23, −1, −18, −11, −7
  11. −23, −14, 19, −15, 2, −5, 8
  12. 9, 27, 29, 4, 26, 11, 13
  13. −24, −17, −25, −18, −2, −8, −11
  14. 11, −9, −21, 10, −1
  15. 26, 18, 9, 5, 22, 23, 16
  16. −18, −30, −27, −29
  17. 26, −9, −17, −8
  18. 30, 10, 3, 13, 19, 9, 7
  19. −23, −28, −18, −7, −3, −1, −11
  20. 11, 6, 22, −19, −10
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What is mean?

The mean is the arithmetic average of a data set. It represents an equal-share value found by combining every value and dividing by the number of values.

How to solve mean

  1. Add every value in the data set, carefully preserving negative signs.
  2. Count how many values are in the set.
  3. Divide the total by the number of values.
  4. Check that the mean is reasonable compared with the values in the set.

Worked example

Find the mean: −6, 2, 7, 9

  1. Add the values: −6 + 2 + 7 + 9 = 12.
  2. There are 4 values.
  3. Divide: 12 ÷ 4 = 3.

Answer: 3

Common mistakes

  • Dividing before all values have been added.
  • Forgetting to include a negative sign in the total.
  • Dividing by the range instead of the number of values.
  • Counting a repeated value only once.

Practice tips

  • Pair positive and negative values that combine conveniently.
  • Write the sum and count on separate lines before dividing.
  • Estimate the answer before calculating to catch sign errors.