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
51015202530

Find the median M of the data: 32, 12, 21, 2, 31, 33, 10, 10, 20.

n = 9
M =
2.Easy
5101520253035

Find the median M of the data: 12, 14, 12, 38, 34, 5.

n = 6
M =
3.Medium
101520253035404550

Find the sample standard deviation s of the data: 24, 50, 50, 10, 52, 40, 46.

n = 7
s =
4.Medium
3035404550

Find the sample standard deviation s of the data: 29, 53, 33, 49, 28.

n = 5
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 70 and standard deviation 15. Find the z-score z of a score of 100.

μ = 70σ = 15x = 100
z =
6.Hard
z −2−1012

A quantity is normally distributed with mean 70 and standard deviation 15. What proportion P of values is below 79?

μ = 70σ = 15x = 79
P =

Answer key

  1. 1. M = 20
  2. 2. M = 13
  3. 3. s = 15.95
  4. 4. s = 11.74
  5. 5. z = 2
  6. 6. P = 0.7257

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