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: 29, 17, 17, 4, 6, 4, 37.

n = 7
x̄ =
2.Easy
51015202530

Find the median M of the data: 8, 30, 21, 2, 24, 13, 11, 18, 8, 12.

n = 10
M =
3.Medium
10152025303540455055

Find the sample standard deviation s of the data: 47, 43, 58, 36, 10, 28, 48.

n = 7
s =
4.Medium
20253035404550

Find the sample standard deviation s of the data: 50, 17, 16, 16, 32.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 60 and standard deviation 20. What proportion P of values is below 100?

μ = 60σ = 20x = 100
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 100 and standard deviation 12. What proportion P of values is below 124?

μ = 100σ = 12x = 124
P =

Answer key

  1. 1. x̄ = 16.29
  2. 2. M = 12.5
  3. 3. s = 15.77
  4. 4. s = 14.94
  5. 5. P = 0.9772
  6. 6. P = 0.9772

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