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
51015202530

Find the median M of the data: 20, 28, 30, 10, 3, 8.

n = 6
M =
2.Easy
510152025

Find the median M of the data: 5, 27, 28, 20, 21, 20, 8.

n = 7
M =
3.Medium
202530354045

Find the sample standard deviation s of the data: 44, 26, 27, 48, 20.

n = 5
s =
4.Medium
20253035404550

Find the sample standard deviation s of the data: 43, 37, 17, 44, 52.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 170 and standard deviation 20. What proportion P of values is below 210?

μ = 170σ = 20x = 210
P =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 500 and standard deviation 60. Find the z-score z of a score of 536.

μ = 500σ = 60x = 536
z =

Answer key

  1. 1. M = 15
  2. 2. M = 20
  3. 3. s = 12.25
  4. 4. s = 13.2
  5. 5. P = 0.9772
  6. 6. z = 0.6

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