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190-B1-1

Mean

1. Find the mean and the range of the following data.

Example

37654 The mean is the average of a data set.
The range is the difference between the
greatest and the least numbers in the data
set.

a. b.
10 5 8 7 5 30 40 10 40 40

c. d.
8 4 5 5 5 4 11 7 9 6 8 9 27
   2   3   4   5   6   7   8   9   10   11   12