Make Comparative Inferences About Populations

Identify the cluster of the data.

• 2 - 4

• 1 - 4

• 6 - 9

• 8 - 9

150 people were polled on their favorite sport.  Based on the table, if you asked only 25 people what their favorite sport is, how many would say soccer is their favorite sport?

• 5 people

• 6 people

• 8 people

• 10 people

• 2

• 4

• 8

• 16

• 15,760

• 17,560

• 16,760

• 16,660

100 second graders were asked to do a book report about one of these four zoo animals.  The number of students who chose each animal is shown in the table.  If 250 second graders had to choose of of the four animals, predict how many would choose to write about a giraffe.

• 60 students

• 50 students

• 40 students

• 30 students

• 100

• 150

• 200

• 250

The following shows the number of calls two radio shows get each day for a ten day period. The two shows are on at the same time. Make a comparative inference based on the median values.

• Show 1 usually receives more calls.

• Show 2 usually receives more calls.

• The shows usually receive equal numbers of calls.

• There is not enough data to draw an inference.

There are two types of plants in a greenhouse. The following dot plots show the heights of 20​ plants, 10 of Type 1 and 10 of Type 2. The plants are given the same amount of food and water and grow at the same rate. What is an inference that can be made from the means?

• Type 2 is typically taller.

• Type 1 is typically taller.

• The types are typically the same height.

Waldo and Freddy caught fish one weekend. The dot plots show the lengths of the fish they caught. Which statement about the lengths of the fish caught by Waldo and Freddy appears to be true?

• The range of the length of the fish caught by Freddy is greater than the range of the length of the fish caught by Waldo.

• The median length of the fish caught by Waldo is greater than the median length of the fish caught by Freddy.

The dot plots show the number of children's books purchased by customers at two differenct bookstores on one day. Which statement is supported by the information in the dot plots?

• The range of the data for Store 1 is greater than the range of the data for Store 2.

• The mean of the data for Store 1 is greater than the mean of the data for Store 2.