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
5101520253035

Find the median M of the data: 38, 37, 4, 13, 35, 21, 5, 33, 3, 22.

n = 10
M =
2.Easy
51015202530

Find the median M of the data: 12, 11, 23, 30, 22, 3, 19, 4, 25.

n = 9
M =
3.Medium
152025303540455055

Find the sample standard deviation s of the data: 58, 24, 11, 21, 50, 28, 34.

n = 7
s =
4.Medium
20253035404550

Find the sample standard deviation s of the data: 18, 44, 53, 39, 42, 23.

n = 6
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 50 and standard deviation 20. Find the z-score z of a score of 26.

μ = 50σ = 20x = 26
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 60 and standard deviation 10. Find the z-score z of a score of 50.

μ = 60σ = 10x = 50
z =

Answer key

  1. 1. M = 21.5
  2. 2. M = 19
  3. 3. s = 16.56
  4. 4. s = 13.34
  5. 5. z = −1.2
  6. 6. z = −1

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