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, 22, 8, 7, 38, 29, 5, 36, 19.

n = 9
x̄ =
2.Easy
5101520253035

Find the mean x̄ of the data: 26, 23, 37, 37, 7, 18, 2, 28.

n = 8
x̄ =
3.Medium
152025303540

Find the sample standard deviation s of the data: 25, 41, 33, 39, 43, 13, 13.

n = 7
s =
4.Medium
25303540455055

Find the sample standard deviation s of the data: 50, 24, 51, 23, 59.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 170 and standard deviation 12. What proportion P of values is below 158?

μ = 170σ = 12x = 158
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 170 and standard deviation 10. What proportion P of values is above 155?

μ = 170σ = 10x = 155
P =

Answer key

  1. 1. x̄ = 19.44
  2. 2. x̄ = 22.25
  3. 3. s = 12.79
  4. 4. s = 16.71
  5. 5. P = 0.1587
  6. 6. P = 0.9332

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