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
510152025303540

Find the median M of the data: 29, 27, 5, 40, 15, 12, 27, 10, 15.

n = 9
M =
2.Easy
246810121416182022

Find the median M of the data: 11, 9, 22, 9, 6, 2, 16.

n = 7
M =
3.Medium
20253035404550

Find the sample standard deviation s of the data: 21, 36, 50, 19, 20.

n = 5
s =
4.Medium
101520253035404550

Find the sample standard deviation s of the data: 52, 35, 38, 39, 10, 47, 39.

n = 7
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 70 and standard deviation 10. Find the z-score z of a score of 90.

μ = 70σ = 10x = 90
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 500 and standard deviation 75. Find the z-score z of a score of 650.

μ = 500σ = 75x = 650
z =

Answer key

  1. 1. M = 15
  2. 2. M = 9
  3. 3. s = 13.55
  4. 4. s = 13.33
  5. 5. z = 2
  6. 6. z = 2

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