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
202224262830323436

Find the mean x̄ of the data: 19, 37, 24, 24, 30, 34.

n = 6
x̄ =
2.Easy
1520253035

Find the mean x̄ of the data: 39, 36, 23, 39, 39, 32, 29, 38, 15.

n = 9
x̄ =
3.Medium
2025303540455055

Find the sample standard deviation s of the data: 22, 33, 20, 19, 25, 59.

n = 6
s =
4.Medium
3540455055

Find the sample standard deviation s of the data: 58, 53, 47, 31, 48, 53, 54.

n = 7
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 5. What proportion P of values is below 42.5?

μ = 50σ = 5x = 42.5
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 10. What proportion P of values is below 30?

μ = 50σ = 10x = 30
P =

Answer key

  1. 1. x̄ = 28
  2. 2. x̄ = 32.22
  3. 3. s = 15.23
  4. 4. s = 8.821
  5. 5. P = 0.06681
  6. 6. P = 0.02275

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