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 |
