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
101214161820222426

Find the median M of the data: 26, 9, 22, 27, 10, 20.

n = 6
M =
2.Easy
10152025303540

Find the median M of the data: 11, 18, 8, 21, 40, 39, 39, 7, 34.

n = 9
M =
3.Medium
10152025303540455055

Find the sample standard deviation s of the data: 10, 19, 35, 23, 23, 59.

n = 6
s =
4.Medium
25303540455055

Find the sample standard deviation s of the data: 39, 37, 22, 57, 48, 25, 34.

n = 7
s =
5.Hard
z −2−1012

Exam scores are normally distributed with mean 50 and standard deviation 15. Find the z-score z of a score of 38.

μ = 50σ = 15x = 38
z =
6.Hard
z −2−1012

A quantity is normally distributed with mean 70 and standard deviation 12. What proportion P of values is above 88?

μ = 70σ = 12x = 88
P =

Answer key

  1. 1. M = 21
  2. 2. M = 21
  3. 3. s = 17.12
  4. 4. s = 12.26
  5. 5. z = −0.8
  6. 6. P = 0.06681

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