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 Basic Statistics (Posted on 2007-03-26)
A set of seven positive integer numbers has the following properties:

• The mode of the set is 1.
• The mean of the set is 4.
• The median of the set is 5, and occurs just once.
• The range of the set is 6.
• What are the numbers?

 See The Solution Submitted by Brian Smith No Rating

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 Solution | Comment 2 of 3 |

The set of seven positive integer numbers is
{1, 1, 1, 5, 6, 7, 7}.

The mode (most common value) is 1 as it occurs thrice with all other numbers occurring no more than twice.

The arithmetic mean (average) is 4 = [(1+1+1+5+6+7+7)/7].

The statistical median (the "middle" value for an odd sample size) is 5.

The statistical range (largest value minus smallest value) is 6 = [7 - 1].

 Posted by Dej Mar on 2007-03-26 09:04:12
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