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 mean x̄ of the data: 11, 7, 28, 29, 5, 21, 8, 14, 12, 36.

n = 10
x̄ =
2.Easy
152025303540

Find the median M of the data: 40, 15, 40, 20, 34, 28, 21, 29.

n = 8
M =
3.Medium
15202530354045505560

Find the sample standard deviation s of the data: 21, 60, 44, 37, 14, 50, 17.

n = 7
s =
4.Medium
1015202530354045

Find the sample standard deviation s of the data: 10, 46, 45, 43, 17, 30.

n = 6
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 500 and standard deviation 40. Find the z-score z of a score of 550.

μ = 500σ = 40x = 550
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 60 and standard deviation 12. Find the z-score z of a score of 75.

μ = 60σ = 12x = 75
z =

Answer key

  1. 1. x̄ = 17.1
  2. 2. M = 28.5
  3. 3. s = 17.77
  4. 4. s = 15.48
  5. 5. z = 1.25
  6. 6. z = 1.25

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