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: 19, 2, 27, 40, 19, 31, 26, 5, 16, 40.

n = 10
M =
2.Easy
5101520253035

Find the median M of the data: 12, 21, 3, 18, 18, 30, 4, 20, 39.

n = 9
M =
3.Medium
152025303540455055

Find the sample standard deviation s of the data: 55, 14, 23, 22, 23, 16.

n = 6
s =
4.Medium
2530354045505560

Find the sample standard deviation s of the data: 60, 59, 21, 47, 33, 34, 59.

n = 7
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 170 and standard deviation 15. What proportion P of values is above 162.5?

μ = 170σ = 15x = 162.5
P =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 60 and standard deviation 8. Find the z-score z of a score of 44.

μ = 60σ = 8x = 44
z =

Answer key

  1. 1. M = 22.5
  2. 2. M = 18
  3. 3. s = 14.95
  4. 4. s = 15.61
  5. 5. P = 0.6915
  6. 6. z = −2

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