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
10152025

Find the median M of the data: 28, 8, 26, 19, 13, 14, 6, 10.

n = 8
M =
2.Easy
51015202530

Find the median M of the data: 8, 14, 6, 7, 30, 2, 12.

n = 7
M =
3.Medium
1520253035404550

Find the sample standard deviation s of the data: 12, 18, 46, 18, 52.

n = 5
s =
4.Medium
152025303540

Find the sample standard deviation s of the data: 11, 19, 25, 14, 44.

n = 5
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 50 and standard deviation 8. Find the z-score z of a score of 38.

μ = 50σ = 8x = 38
z =
6.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 12. What proportion P of values is below 68?

μ = 50σ = 12x = 68
P =

Answer key

  1. 1. M = 13.5
  2. 2. M = 8
  3. 3. s = 18.36
  4. 4. s = 13.09
  5. 5. z = −1.5
  6. 6. P = 0.9332

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