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 median M of the data: 6, 28, 39, 35, 38, 14, 9, 9, 23, 2.

n = 10
M =
2.Easy
101520253035

Find the mean x̄ of the data: 38, 37, 15, 6, 13, 15, 12, 15, 10, 13.

n = 10
x̄ =
3.Medium
101520253035404550

Find the sample standard deviation s of the data: 24, 39, 28, 50, 10.

n = 5
s =
4.Medium
3540455055

Find the sample standard deviation s of the data: 53, 33, 52, 55, 57.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 100 and standard deviation 20. What proportion P of values is below 140?

μ = 100σ = 20x = 140
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 170 and standard deviation 20. What proportion P of values is below 150?

μ = 170σ = 20x = 150
P =

Answer key

  1. 1. M = 18.5
  2. 2. x̄ = 17.4
  3. 3. s = 15.17
  4. 4. s = 9.695
  5. 5. P = 0.9772
  6. 6. P = 0.1587

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