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
510152025303540

Find the median M of the data: 2, 36, 40, 27, 9, 13.

n = 6
M =
2.Easy
101520253035

Find the mean x̄ of the data: 35, 26, 24, 11, 20, 31, 9.

n = 7
x̄ =
3.Medium
3540455055

Find the sample standard deviation s of the data: 55, 31, 41, 56, 42.

n = 5
s =
4.Medium
28303234363840424446

Find the sample standard deviation s of the data: 32, 39, 46, 46, 28, 37.

n = 6
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 100 and standard deviation 10. What proportion P of values is below 95?

μ = 100σ = 10x = 95
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 170 and standard deviation 20. What proportion P of values is above 146?

μ = 170σ = 20x = 146
P =

Answer key

  1. 1. M = 20
  2. 2. x̄ = 22.29
  3. 3. s = 10.51
  4. 4. s = 7.294
  5. 5. P = 0.3085
  6. 6. P = 0.8849

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