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: 24, 36, 9, 16, 10, 31, 18, 26.

n = 8
M =
2.Easy
5101520253035

Find the mean x̄ of the data: 29, 38, 3, 19, 19, 12, 13, 34.

n = 8
x̄ =
3.Medium
1520253035404550

Find the sample standard deviation s of the data: 52, 18, 41, 34, 13, 52.

n = 6
s =
4.Medium
253035404550

Find the sample standard deviation s of the data: 25, 45, 27, 53, 42, 32.

n = 6
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 70 and standard deviation 5. Find the z-score z of a score of 65.

μ = 70σ = 5x = 65
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 50 and standard deviation 12. Find the z-score z of a score of 40.4.

μ = 50σ = 12x = 40.4
z =

Answer key

  1. 1. M = 21
  2. 2. x̄ = 20.88
  3. 3. s = 16.66
  4. 4. s = 11.08
  5. 5. z = −1
  6. 6. z = −0.8

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