Question

company manufactures car batteries of a particular type. The lives (in years) of 35 such

batteries were recorded as follows:

2.6 3.0 3.7 3.2 4.1 3.5 3.5 3.2 3.4 3.8 3.2 4.6 3.7 2.5 3.4 3.3 2.9 4.3

2.8 3.5 3.2 3.9 3.2 3.1 3.2 3.7 3.4 3.8 3.2 2.6 3.5 4.2 2.9 3.6 3.0

Construct a grouped frequency distribution table for this data, using class interval of size

0.5

starting from the interval 2.5-3.0.​

Answer 1

Answer:

Life (in years)

Number of batteries

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

Given is the life of 40 batteries in years.

We know that a grouped frequency distribution table has class-intervals or groups and their corresponding frequencies.

It is given that the class size needs to be 0.5 and the class intervals must start with 2−2.5.

Also, 4.6 is the highest value in the given data.

Hence, our class intervals will be 2−2.5, 2.5−3, 3−3.5, 3.5−4, 4−4.5 and 4.5−5.

Also, the classes are exclusive. It means the upper limit of a class is excluded from that class (and is included in the next class).

So, the grouped frequency distribution table for the given data will be as shown above.

Step-by-step explanation:

mark me as brainliest