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
5101520253035

Find the mean x̄ of the data: 8, 39, 34, 15, 5, 17, 31, 15, 32.

n = 9
x̄ =
2.Easy
1520253035

Find the median M of the data: 15, 16, 14, 22, 35, 25, 11, 27.

n = 8
M =
3.Medium
15202530354045

Find the sample standard deviation s of the data: 21, 30, 17, 36, 13, 48, 36.

n = 7
s =
4.Medium
202530354045

Find the sample standard deviation s of the data: 38, 46, 28, 42, 19.

n = 5
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 500 and standard deviation 60. What proportion P of values is above 524?

μ = 500σ = 60x = 524
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 50 and standard deviation 15. What proportion P of values is below 68.75?

μ = 50σ = 15x = 68.75
P =

Answer key

  1. 1. x̄ = 21.78
  2. 2. M = 19
  3. 3. s = 12.41
  4. 4. s = 10.99
  5. 5. P = 0.3446
  6. 6. P = 0.8944

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