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.
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