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Twelve Batteries were tested to see how many hours they would last The frequency distribution is shown here

Twelve Batteries were tested to see how many hours they would last. The frequency distribution is shown here.

Hours             Frequency

1 - 3                    1

4 - 6                    4

7 - 9                    5

10 - 12                1

13 - 15                1

find mean and modal class

Apr 09 2020 View more View Less

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