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: 40, 5, 3, 19, 34, 31, 14, 20, 13, 19.

n = 10
M =
2.Easy
1015202530

Find the median M of the data: 16, 17, 7, 25, 8, 15, 8, 19, 28, 34.

n = 10
M =
3.Medium
152025303540455055

Find the sample standard deviation s of the data: 43, 48, 54, 55, 48, 14, 59.

n = 7
s =
4.Medium
15202530354045

Find the sample standard deviation s of the data: 13, 48, 44, 49, 33, 40, 30.

n = 7
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 72.5?

μ = 50σ = 15x = 72.5
P =
6.Hard
z −2−1012

A quantity is normally distributed with mean 70 and standard deviation 20. What proportion P of values is above 95?

μ = 70σ = 20x = 95
P =

Answer key

  1. 1. M = 19
  2. 2. M = 16.5
  3. 3. s = 15.03
  4. 4. s = 12.67
  5. 5. P = 0.06681
  6. 6. P = 0.1056

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