Q9. A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded as follows:
2.6 3.0 3.7 3.2 2.2 4.1 3.5 4.5
3.5 2.3 3.2 3.4 3.8 3.2 4.6 3.7
2.5 4.4 3.4 3.3 2.9 3.0 4.3 2.8
3.5 3.2 3.9 3.2 3.2 3.1 3.7 3.4
4.6 3.8 3.2 2.6 3.5 4.2 2.9 3.6
Construct a grouped frequency distribution table for this data, using class intervalsof size 0.5 starting from the interval 2 - 2.5.

Answers (1)

 

 Life of batteries
(in years)
 Frequency
 2.0 - 2.5  2
 2.5 - 3.0  6
 3.0 - 3.5  14
 3.5 - 4.0  11
4.0 - 4.5   4
4.5 - 5.0   3
 Total 40 

Class size : 0.5

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