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
152025303540

Find the mean x̄ of the data: 23, 15, 38, 27, 40, 40, 26.

n = 7
x̄ =
2.Easy
5101520253035

Find the mean x̄ of the data: 28, 39, 36, 38, 38, 17, 2, 35.

n = 8
x̄ =
3.Medium
152025303540455055

Find the sample standard deviation s of the data: 12, 28, 58, 59, 26, 20, 56.

n = 7
s =
4.Medium
152025303540455055

Find the sample standard deviation s of the data: 11, 29, 30, 58, 21, 51.

n = 6
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 500 and standard deviation 50. What proportion P of values is below 460?

μ = 500σ = 50x = 460
P =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 500 and standard deviation 50. Find the z-score z of a score of 600.

μ = 500σ = 50x = 600
z =

Answer key

  1. 1. x̄ = 29.86
  2. 2. x̄ = 29.13
  3. 3. s = 20.01
  4. 4. s = 17.9
  5. 5. P = 0.2119
  6. 6. z = 2

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