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 median M of the data: 19, 7, 23, 23, 33, 18, 15, 19, 13.

n = 9
M =
2.Easy
101520253035

Find the median M of the data: 7, 8, 14, 10, 7, 11, 38, 17.

n = 8
M =
3.Medium
202530354045505560

Find the sample standard deviation s of the data: 21, 20, 52, 51, 49, 43, 60.

n = 7
s =
4.Medium
152025303540455055

Find the sample standard deviation s of the data: 12, 57, 17, 26, 23, 55, 39.

n = 7
s =
5.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 85.6.

μ = 100σ = 12x = 85.6
z =
6.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 82.5.

μ = 70σ = 10x = 82.5
z =

Answer key

  1. 1. M = 19
  2. 2. M = 10.5
  3. 3. s = 15.7
  4. 4. s = 17.99
  5. 5. z = −1.2
  6. 6. z = 1.25

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