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: 3, 18, 36, 28, 8, 7, 18.

n = 7
M =
2.Easy
681012141618202224

Find the median M of the data: 19, 6, 24, 6, 15, 23.

n = 6
M =
3.Medium
15202530354045505560

Find the sample standard deviation s of the data: 55, 23, 60, 58, 12, 14, 13.

n = 7
s =
4.Medium
2025303540

Find the sample standard deviation s of the data: 19, 42, 18, 33, 16.

n = 5
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 60 and standard deviation 15. Find the z-score z of a score of 37.5.

μ = 60σ = 15x = 37.5
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 170 and standard deviation 8. Find the z-score z of a score of 160.4.

μ = 170σ = 8x = 160.4
z =

Answer key

  1. 1. M = 18
  2. 2. M = 17
  3. 3. s = 22.87
  4. 4. s = 11.37
  5. 5. z = −1.5
  6. 6. z = −1.2

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