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
101520253035

Find the median M of the data: 13, 19, 9, 32, 34, 30, 39, 33, 29, 33.

n = 10
M =
2.Easy
2025303540

Find the median M of the data: 30, 39, 35, 40, 32, 16.

n = 6
M =
3.Medium
152025303540455055

Find the sample standard deviation s of the data: 49, 58, 49, 16, 54, 51, 13.

n = 7
s =
4.Medium
2530354045

Find the sample standard deviation s of the data: 30, 45, 47, 36, 22, 28, 44.

n = 7
s =
5.Hard
z −2−1012

A quantity is normally distributed with mean 170 and standard deviation 5. What proportion P of values is above 167.5?

μ = 170σ = 5x = 167.5
P =
6.Hard
z −2−1012

Exam scores are normally distributed with mean 70 and standard deviation 8. Find the z-score z of a score of 60.4.

μ = 70σ = 8x = 60.4
z =

Answer key

  1. 1. M = 31
  2. 2. M = 33.5
  3. 3. s = 18.68
  4. 4. s = 9.678
  5. 5. P = 0.6915
  6. 6. z = −1.2

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