Math Population Inferences

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

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

• 150

• 200

• 250

The point labeled "masked point" is a/an

• Outlier

• Maximum

• Sample

• Mode

What is the values or numbers that occurs the most in a data set?

• Median

• Mode

• Mean

• Maximum

The dot plots show the number of siblings of students in two different classrooms.
Which statement is best supported by the data in the dot plots?

• The mode of the data in Mrs. Blackfield's class is less than the mode of the data in Mr. Johnson's class.

• The range of the data in Mr. Johnson's class is less than the range of the data in Mrs. Blackfield's class.

• The median of the data in Mrs. Blackfield's class is greater than the range of the data in Mr. Johnson's class.

• The minimum value of the data in Mr. Johnson's class is greater than the minimum value for the data in Mrs. Blackfield's class.

Which statement is true based on the box plots?

• Plot 2 has a larger spread than plot 1.

• Plot 1 and plot 2 have a center score of 60.

• Plot 1 has a minimum of 30 and plot 2 has a maximum score of 75.

• Plot 2 has a larger IQR than plot 1.

Answer the question pictured.

• F

• G

• H

• J