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
1015202530

Find the mean x̄ of the data: 34, 28, 19, 20, 25, 31, 10, 25.

n = 8
x̄ =
2.Easy
5101520253035

Find the median M of the data: 8, 23, 16, 13, 13, 2, 35.

n = 7
M =
3.Medium
3035404550

Find the sample standard deviation s of the data: 45, 48, 27, 40, 51.

n = 5
s =
4.Medium
253035404550

Find the sample standard deviation s of the data: 50, 36, 44, 25, 51.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 70 and standard deviation 5. What proportion P of values is above 64?

μ = 70σ = 5x = 64
P =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 100 and standard deviation 5. Find the z-score z of a score of 96.

μ = 100σ = 5x = 96
z =

Answer key

  1. 1. x̄ = 24
  2. 2. M = 13
  3. 3. s = 9.418
  4. 4. s = 10.85
  5. 5. P = 0.8849
  6. 6. z = −0.8

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