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
10152025303540

Find the median M of the data: 11, 20, 38, 34, 40, 27, 14, 6.

n = 8
M =
2.Easy
5101520253035

Find the median M of the data: 30, 8, 39, 2, 8, 8, 36, 35.

n = 8
M =
3.Medium
152025303540

Find the sample standard deviation s of the data: 28, 29, 15, 39, 33, 44, 39.

n = 7
s =
4.Medium
2025303540455055

Find the sample standard deviation s of the data: 17, 55, 43, 22, 29.

n = 5
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 500 and standard deviation 25. Find the z-score z of a score of 480.

μ = 500σ = 25x = 480
z =
6.Hard
z −2−1012

A quantity is normally distributed with mean 100 and standard deviation 5. What proportion P of values is below 96?

μ = 100σ = 5x = 96
P =

Answer key

  1. 1. M = 23.5
  2. 2. M = 19
  3. 3. s = 9.624
  4. 4. s = 15.63
  5. 5. z = −0.8
  6. 6. P = 0.2119

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