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Question

Calculate the arithmetic mean, range, median and mode of the given data:
2,4,7,4,9,5,7,3,6,7

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Solution

Arithmetic mean=sumofobservationsnumberofobservations

=2+4+7+4+9+5+7+3+6+710

=5410=5.4

Median:
Arranging the data in ascending order:
2,3,4,4,5,6,7,7,7,9

Here the middle terms are 5 and 6

The average of 5 and 6=5+62=112=5.5

Median=5.5

Mode:The most repeating values is 7.

Mode is 7

Range=Highest observationLowest observation=92=7

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