Question

The line plot shows the number of hours students studied for a final exam. A number line with one x above .5, one x above 1.5, one x above 2, one x above 3, two xs above 3.5, two xs above 4, one x above 4.5, and one x above 8.5. How many students studied at least four hours for the final exam?

Answer 1

To read the line plot in order to answer this question, you will need to understand that each X above the numbers represents the number of hours 1 student studied. If you count the total number of Xs, that would represent the total number of students surveyed.

The number of students that studied at least four hours, would be the number of Xs that are at 4 or above. This means there were 4 students that studied for hours or more.

Answer 2

The correct answer is:

4 students.

Explanation:

The only values that are 4 or more in this data set are the 2 marked above 4 hours, 1 marked above 4.5 hours, and 1 marked above 8.5 hours.

This is 2+1+1=4 students.