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
510152025303540

Find the mean x̄ of the data: 37, 40, 9, 24, 2, 25, 23.

n = 7
x̄ =
2.Easy
10152025

Find the median M of the data: 26, 6, 18, 19, 25, 27, 29, 7, 21.

n = 9
M =
3.Medium
202530354045

Find the sample standard deviation s of the data: 24, 48, 18, 20, 19, 20, 35.

n = 7
s =
4.Medium
25303540455055

Find the sample standard deviation s of the data: 24, 33, 44, 29, 46, 59.

n = 6
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 70 and standard deviation 10. Find the z-score z of a score of 85.

μ = 70σ = 10x = 85
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 50 and standard deviation 15. Find the z-score z of a score of 56.

μ = 50σ = 15x = 56
z =

Answer key

  1. 1. x̄ = 22.86
  2. 2. M = 21
  3. 3. s = 11.21
  4. 4. s = 12.92
  5. 5. z = 1.5
  6. 6. z = 0.4

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