Descriptive statistics worksheet with answers

Free printable Descriptive statistics worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy
1015202530

Find the mean x̄ of the data: 19, 33, 24, 20, 25, 28, 19, 10, 30.

n = 9
x̄ =
2.Easy
5101520253035

Find the mean x̄ of the data: 36, 28, 34, 8, 16, 5.

n = 6
x̄ =
3.Medium
303540455055

Find the sample standard deviation s of the data: 37, 58, 59, 41, 29, 37, 36.

n = 7
s =
4.Medium
101520253035404550

Find the sample standard deviation s of the data: 43, 22, 29, 26, 37, 52, 10.

n = 7
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 15. What proportion P of values is below 35?

μ = 50σ = 15x = 35
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 8. What proportion P of values is below 58?

μ = 50σ = 8x = 58
P =

Answer key

  1. 1. x̄ = 23.11
  2. 2. x̄ = 21.17
  3. 3. s = 11.54
  4. 4. s = 13.97
  5. 5. P = 0.1587
  6. 6. P = 0.8413

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