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Question:

A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded. Construct a grouped frequency distribution table for this data, using class intervals of size 0.5 starting from the interval 2.0-2.5.

Solution:

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