Question

The number of hours for which students of a particular class watched television during holidays is shown through the given graph.

Answer the following

(i) For how many hours did the maximum number of students watch TV?

(ii) How many students watched TV for less than 4 hours?

(iii) How many students spent more than 5 hours in watching TV?​

Answer 1

(i) From the graph, it can be observed that the maximum number of students (i.e., 32) watched TV for 4 - 5 hours.

(ii) The students who watched TV for less than 4 hours are the students who watched TV for 1 - 2 hours or 2 - 3 hours or 3 - 4 hours.

Hence, total number of students = 4 + 8 + 22 = 34

(iii) The students who watched TV for more than 5

hours are the students who watched TV for 5 - 6 hours or 6 - 7 hours.

Hence, total number of students = 8 + 6 = 14

Answer 2

In the above Question , a bar graph is given for Number of Students Vs Hours of TV watched per day for a given number or students .

Interference from the graph -

See the given attachment .

From the above graph , we can gather the following information -

Bar 1 - 4 students watched TV for 1 - 2 hours per day .

Bar 2 - 8 students watched TV for 2 - 3 hours per day .

Bar 3 - 22 students watched TV for 3 - 4 hours per day .

Bar 4 - 32 students watched TV for 4 - 5 hours per day .

Bar 5 - 8 students watched TV for 5 - 6 hours per day .

Bar 6 - 6 students watched TV for 6 - 7 hours per day .

Total Number Of Students counted -

=> 4 + 8 + 22 + 32 + 8 + 6

=> 90 students

To find -

(i) For how many hours did the maximum number of students watch TV?

(ii) How many students watched TV for less than 4 hours?

(iii) How many students spent more than 5 hours in watching TV?

Solution -

( 1 ) The maximum number of students watched TV for 4 - 5 hours in a day.

( 2 ) 4 students watched TV for 1 - 2 hours per day , 8 students watched TV for 2 - 3 hours per day , and 22 students watched TV for 3 - 4 hours per day .

So , total number of students who watched TV for less than 4 hours in a day -

=> 4 + 8 + 22

=> 34 students.

34 Students watched TV for less than 4 hours .

( 3 ) 8 students watched TV for 5 - 6 hours per day , and 6 students watched TV for 6 - 7 hours per day .

So , total number of students who watched TV for more than 5 hours in a day -

=> 8 + 6

=> 14 students.

13 Students watched TV for more than 5 hours .

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