A company manufactures car batteries of a particular type. The lives (in years) of 40such 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


A grouped frequency table using class intervals of size 0.5 starting from the interval 2-2.5 is constructed 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




9
1