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 intervals of size 0.5 starting from the interval 2 - 2.5.

Solution

Grouped frequency distribution table with class intervals of size 0.5 starting from the interval 2 – 2.5:

The data is represented in the grouped frequency distribution is tabulated below

Lives of batteries (in years) No. of batteries (Frequency)
2-2.5 2
2.5-3 6
3-3.5 14
3.5-4 11
4-4.5 4
4.5-5 3
Total 40

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