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
1520253035

Find the median M of the data: 12, 35, 21, 12, 33, 35.

n = 6
M =
2.Easy
5101520253035

Find the mean x̄ of the data: 36, 27, 13, 31, 39, 20, 22, 3, 18, 18.

n = 10
x̄ =
3.Medium
202530354045

Find the sample standard deviation s of the data: 41, 49, 25, 49, 16.

n = 5
s =
4.Medium
1520253035404550

Find the sample standard deviation s of the data: 52, 38, 14, 19, 18.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 8. What proportion P of values is above 54.8?

μ = 50σ = 8x = 54.8
P =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 60 and standard deviation 8. Find the z-score z of a score of 63.2.

μ = 60σ = 8x = 63.2
z =

Answer key

  1. 1. M = 27
  2. 2. x̄ = 22.7
  3. 3. s = 14.87
  4. 4. s = 16.22
  5. 5. P = 0.2743
  6. 6. z = 0.4

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