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
5101520

Find the mean x̄ of the data: 19, 8, 24, 9, 3, 19, 10, 21.

n = 8
x̄ =
2.Easy
510152025303540

Find the median M of the data: 33, 31, 40, 33, 20, 4, 38, 6, 39.

n = 9
M =
3.Medium
15202530354045

Find the sample standard deviation s of the data: 15, 45, 35, 39, 47.

n = 5
s =
4.Medium
303540455055

Find the sample standard deviation s of the data: 28, 31, 38, 57, 49.

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 above 58?

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

A quantity is normally distributed with mean 170 and standard deviation 5. What proportion P of values is below 166?

μ = 170σ = 5x = 166
P =

Answer key

  1. 1. x̄ = 14.13
  2. 2. M = 33
  3. 3. s = 12.77
  4. 4. s = 12.22
  5. 5. P = 0.1587
  6. 6. P = 0.2119

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