Question

Twenty high school students were asked how many hours of TV they watch each day. The dot plot above represents their answers.

How many students watch 3 hours or less?

a) 13
b) 2
c) 20
d) 1

Answer 1

A is the correct answer to your problem.

Answer 2

Hence, the number of students watching TV 3 hours or less are:

13

Explanation:

From the dot plot we can represent a set of data values in a table as:

Number of hours Frequency

0 5

1 5

2 1

3 2

4 1

5 4

6 2

7 0

Here frequency represent the number of students watching tv at the number of hours.

Now the number of students watching TV 3 hours or less is:

5+5+1+2=13.

Hence, the number of students watching TV 3 hours or less are:

13