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: 14, 5, 7, 10, 24, 2, 37.

n = 7
x̄ =
2.Easy
510152025303540

Find the mean x̄ of the data: 35, 14, 33, 5, 22, 5, 29, 40.

n = 8
x̄ =
3.Medium
15202530354045

Find the sample standard deviation s of the data: 22, 42, 15, 48, 15, 26.

n = 6
s =
4.Medium
2025303540

Find the sample standard deviation s of the data: 36, 40, 30, 17, 37, 28.

n = 6
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 64.8.

μ = 60σ = 8x = 64.8
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 60 and standard deviation 5. Find the z-score z of a score of 57.5.

μ = 60σ = 5x = 57.5
z =

Answer key

  1. 1. x̄ = 14.14
  2. 2. x̄ = 22.88
  3. 3. s = 13.96
  4. 4. s = 8.335
  5. 5. z = 0.6
  6. 6. z = −0.5

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