Question

Duration of watching TV by certain number of students are reperesented graphically in the histogram. How many students watch TV for 4 hours and more?

• A. 35
• B. 25
• C. 55
• D. 50

Answer 1

The correct option is C 55

The histogram is built for a continuous distribution.

In the given histogram, students who watch TV for 4 hours and more is the sum of the length of the bars of class interval 4-5, 5-6 and 6-7.

Hence , the number of students who watch TV for 4 and more hours = 35 + 15 +5 = 55.