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 mean x̄ of the data: 29, 28, 13, 32, 29, 19, 15, 19, 36.

n = 9
x̄ =
2.Easy
5101520253035

Find the median M of the data: 24, 25, 38, 19, 16, 6, 31, 5, 3, 17.

n = 10
M =
3.Medium
2025303540455055

Find the sample standard deviation s of the data: 48, 47, 19, 23, 40, 59.

n = 6
s =
4.Medium
30354045505560

Find the sample standard deviation s of the data: 32, 46, 59, 54, 30, 60.

n = 6
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 500 and standard deviation 100. Find the z-score z of a score of 300.

μ = 500σ = 100x = 300
z =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 70 and standard deviation 8. Find the z-score z of a score of 60.4.

μ = 70σ = 8x = 60.4
z =

Answer key

  1. 1. x̄ = 24.44
  2. 2. M = 18
  3. 3. s = 15.5
  4. 4. s = 13.24
  5. 5. z = −2
  6. 6. z = −1.2

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