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: 3, 26, 39, 25, 29, 4, 18.

n = 7
M =
2.Easy
1520253035

Find the mean x̄ of the data: 27, 39, 11, 23, 17, 28, 15, 35.

n = 8
x̄ =
3.Medium
152025303540455055

Find the sample standard deviation s of the data: 54, 40, 59, 59, 12, 26.

n = 6
s =
4.Medium
303540455055

Find the sample standard deviation s of the data: 58, 43, 44, 30, 38, 27, 33.

n = 7
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 70 and standard deviation 5. What proportion P of values is above 66?

μ = 70σ = 5x = 66
P =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 60 and standard deviation 12. Find the z-score z of a score of 42.

μ = 60σ = 12x = 42
z =

Answer key

  1. 1. M = 25
  2. 2. x̄ = 24.38
  3. 3. s = 19.4
  4. 4. s = 10.52
  5. 5. P = 0.7881
  6. 6. z = −1.5

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