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
182022242628303234

Find the mean x̄ of the data: 19, 33, 28, 33, 23, 29, 30, 17, 34.

n = 9
x̄ =
2.Easy
51015202530

Find the mean x̄ of the data: 34, 17, 20, 13, 5, 8, 31.

n = 7
x̄ =
3.Medium
152025303540455055

Find the sample standard deviation s of the data: 30, 23, 12, 39, 57.

n = 5
s =
4.Medium
2025303540455055

Find the sample standard deviation s of the data: 19, 56, 22, 33, 30.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 8. What proportion P of values is below 58?

μ = 50σ = 8x = 58
P =
6.Hard
z −2−1012

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

μ = 100σ = 5x = 96
P =

Answer key

  1. 1. x̄ = 27.33
  2. 2. x̄ = 18.29
  3. 3. s = 17.02
  4. 4. s = 14.58
  5. 5. P = 0.8413
  6. 6. P = 0.7881

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