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: 13, 27, 36, 28, 22, 38, 9, 23, 3.

n = 9
M =
2.Easy
510152025303540

Find the mean x̄ of the data: 18, 21, 4, 37, 32, 7, 40.

n = 7
x̄ =
3.Medium
1520253035404550

Find the sample standard deviation s of the data: 47, 45, 50, 11, 14.

n = 5
s =
4.Medium
2530354045

Find the sample standard deviation s of the data: 36, 37, 24, 35, 34, 49, 49.

n = 7
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 60 and standard deviation 8. Find the z-score z of a score of 56.

μ = 60σ = 8x = 56
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 50 and standard deviation 15. Find the z-score z of a score of 65.

μ = 50σ = 15x = 65
z =

Answer key

  1. 1. M = 23
  2. 2. x̄ = 22.71
  3. 3. s = 19.19
  4. 4. s = 8.826
  5. 5. z = −0.5
  6. 6. z = 1

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