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Mean
The mean is commonly the most significant of all the numerical measurements used to describe data, and it is what the most people call an average.
Example
Find the mean of the following sample of numbers.
28 36 49 20 17
Solution:
(28 + 36 + 49 + 20 +17) /5 = 150/5 = 30
Importance
A politician claims that the mean salary for managers in his state is more than national mean $82,000. The salaries (in dollars) for a random sample of 30 managers in the state ar
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