Get ready for the final

What is the interquartile range (IQR) of this data set?

• 12
• 18
• 22
• 39

Which conclusion can you draw from the graph? Select all that apply.

• There are an equal number of swimmers less than 10 years old and older than 14 years old.
• Fewer than half the swimmers are older than 12.
• Only 7 of the swimmers are younger than age 8.
• There are 9 more swimmers who are 12 or younger than swimmers who are older than 12.

The box-and-whisker plot describes the number of books per student a class checked out from the school library one month. According to the plot, what percent of the students checked out between 6 and 8 books?

• 20%
• 25%
• 50%
• 75%

What is the joint relative frequency of females who prefer dogs? Select all that apply.

• .47
• .23
• .44
• 23%
• 44%

Which statement is a conditional relative frequency shown with the correct supporting ratio?

• The ratio of students who like Berry Bomb the best is 16/39.
• The ratio of 9th graders who like Yellow Energy is 11/39.
• The ratio of those surveyed who are 10th graders is 21/39.
• The ratio of students who like Yellow Energy who are also 10th graders is 12/23.

Choose the correct statements. Select all that apply.

• The joint relative frequency for people WITHOUT children who prefer a beach vacation is .28 or 28%.
• The joint relative frequency for people WITH children who prefer a beach vacation is .28 or 28%.
• The marginal relative frequency for those who prefer the mountain vacation is .13 or 13%.
• The marginal relative frequency for those who prefer the mountain vacation is .37 or 37%.

The linear regression equation for a data set is y = -1.2x + 23.5, where y is the number of balloons sold and x is the week number. Use the equation to predict the number of balloons the store sells during week 8. Round to the nearest whole number.

• 14
• 33
• 73
• 96

Determine if the two triangles are congruent. If they are, state how you know.

• SAS
• AAS
• SSS
• Not enough information

State what additional information is required in order to know that the triangles are congruent for the reason given (SELECT TWO CHOICES).

• 
• 
• 
• 

What does a correlation coefficient of r = -0.01 imply about the graph of the data set? Select all that apply.

• Generally, the slope is positive.
• Generally, the slope is negative.
• A linear model is a good fit for the data.
• A linear model is not a good fit for the data.