PRACTICE PROBLEMS ON READING DOT PLOTS WORKSHEET

Problem 1 :

The list shows the number of minutes it took each student in a class to present a science project.

12  10  18  20  14  14  10  18  20  10  16   14   18   16   18

Cecelia is making the dot plot shown to display the data. Which two data points does Cecelia still need to add to the dot plot?

Solution

Problem 2 :

The dot plots show the numbers of apples picked by members of two different tour groups at an orchard.

Which statement correctly compares these two data sets?

a) The median of the data is the same for both data sets.

b) The mode of the data is the same for both data sets.

c) The range of the data is the same for both data sets.

d) The distribution of the data is symmetrical for both data sets.

Solution

Problem 3 :

The dot plot shows the number of packages mailed by the last 20 customers at a post office.

Which statement best describes the data shown in the dot plot?

a) The data distribution has gaps.

b) The data distribution is symmetrical.

c) The data are clustered at 5.

d) The peak of the data is at 10.

Solution

Problem 4 :

The list shows the lengths in centimeters of some toy boats. The length of one toy boat is missing.

5, 5, 6, 10, 8, 5, ___

Which dot plot represents the lengths of all of the toy boats?

Solution

Problem 5 :

The dot plot shows the number of tickets needed for each ride at a carnival.

What is the difference between the number of rides that need fewer than 4 tickets and the number of rides that need 4 or more tickets?

a) 7     b) 2     c) 9     d) 4

Solution