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
182022242628

Find the median M of the data: 23, 28, 18, 20, 28, 17.

n = 6
M =
2.Easy
51015202530

Find the mean x̄ of the data: 2, 20, 18, 33, 22, 3, 21, 24, 32, 22.

n = 10
x̄ =
3.Medium
152025303540455055

Find the sample standard deviation s of the data: 56, 12, 40, 33, 29, 36, 34.

n = 7
s =
4.Medium
152025303540455055

Find the sample standard deviation s of the data: 16, 52, 29, 57, 11.

n = 5
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 500 and standard deviation 75. Find the z-score z of a score of 545.

μ = 500σ = 75x = 545
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 100 and standard deviation 12. Find the z-score z of a score of 82.

μ = 100σ = 12x = 82
z =

Answer key

  1. 1. M = 21.5
  2. 2. x̄ = 19.7
  3. 3. s = 13.12
  4. 4. s = 20.77
  5. 5. z = 0.6
  6. 6. z = −1.5

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