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
101520253035

Find the median M of the data: 21, 32, 18, 35, 25, 24, 30, 18, 9.

n = 9
M =
2.Easy
5101520253035

Find the mean x̄ of the data: 6, 4, 24, 14, 36, 26, 20, 2, 2, 7.

n = 10
x̄ =
3.Medium
283032343638404244

Find the sample standard deviation s of the data: 28, 35, 30, 27, 45, 43.

n = 6
s =
4.Medium
2025303540455055

Find the sample standard deviation s of the data: 22, 21, 55, 32, 20.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 500 and standard deviation 60. What proportion P of values is below 470?

μ = 500σ = 60x = 470
P =
6.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 =

Answer key

  1. 1. M = 24
  2. 2. x̄ = 14.1
  3. 3. s = 7.763
  4. 4. s = 14.78
  5. 5. P = 0.3085
  6. 6. z = −1.2

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