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
101520253035

Find the mean x̄ of the data: 14, 7, 21, 26, 12, 6, 38, 25.

n = 8
x̄ =
2.Easy
510152025303540

Find the median M of the data: 22, 2, 40, 40, 21, 4, 20.

n = 7
M =
3.Medium
25303540455055

Find the sample standard deviation s of the data: 57, 59, 25, 22, 31, 54, 21.

n = 7
s =
4.Medium
253035404550

Find the sample standard deviation s of the data: 23, 42, 47, 53, 37, 52.

n = 6
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 15. What proportion P of values is above 20?

μ = 50σ = 15x = 20
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 100 and standard deviation 12. What proportion P of values is above 94?

μ = 100σ = 12x = 94
P =

Answer key

  1. 1. x̄ = 18.63
  2. 2. M = 21
  3. 3. s = 17.42
  4. 4. s = 11.24
  5. 5. P = 0.9772
  6. 6. P = 0.6915

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