Question

How many students watch TV for less than 4 hours?

(A) 34
(B) 32
(C) 24

Answer 1

Hint: We are given a histogram showing the hours of TV watched by a number of students each day. From the given histogram, we have to find the number of students who watch TV less than 4 hours a day. We are given the hours of TV watched as the x – axis and the number of the students. In order to find the number of students who watch TV less than 4 hours a day can be calculated by adding up the numbers of the length of the histogram for the value of x-axis till 4 hours. Hence, we will have the required value of the number of students.

Complete step by step answer:
According to the given question, we are given a histogram showing the hours of TV watched by a number of students each day. From the given histogram, we have to find the number of students who watch TV less than 4 hours a day.
In the given histogram, we have the x – axis showing the number of hours TV is watched per day and the y – axis shows the number of students.
In order to find the number of students who watch TV less than 4 hours, we will add up the lengths of the bar in the histogram up to the value of ‘hours of TV watched per day’ in the x – axis as 4 hours.
So, we have,
Total number of students who watch TV less than 4 hours = no. of students who watch TV for 1 -2 hours + No. of students who watch TV for 2 – 3 hours + No. of students who watch TV for 3 – 4 hours
\[\Rightarrow 4+8+22\]
\[\Rightarrow 34\] students
Therefore, 34 students watch TV for less than 4 hours.
So, the correct answer is Option (A).

Note: The number of hours is given in the x-axis and so do not get confused by it being in the y – axis. Also, the number of students is given in the y – axis and not in the x – axis. And since the question asked to find the no. of students less than 4 hours so we add the numbers up till 4 hours. The number of students should be added correctly as well.