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
10152025303540

Find the median M of the data: 21, 23, 13, 21, 35, 9, 40, 25.

n = 8
M =
2.Easy
510152025303540

Find the mean x̄ of the data: 38, 20, 13, 7, 40, 24, 2.

n = 7
x̄ =
3.Medium
1520253035404550

Find the sample standard deviation s of the data: 33, 12, 44, 26, 50, 40, 51.

n = 7
s =
4.Medium
152025303540455055

Find the sample standard deviation s of the data: 39, 34, 13, 57, 18, 34.

n = 6
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 70 and standard deviation 8. What proportion P of values is below 63.6?

μ = 70σ = 8x = 63.6
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 60 and standard deviation 20. What proportion P of values is above 20?

μ = 60σ = 20x = 20
P =

Answer key

  1. 1. M = 22
  2. 2. x̄ = 20.57
  3. 3. s = 14.05
  4. 4. s = 15.73
  5. 5. P = 0.2119
  6. 6. P = 0.9772

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