Module 3 Review

Which scatterplot represents a linear relationship between x and y?

• 
• 
• 
• 

Sally and her classmates are studying the number of Hot Chocolate sales vs. Ice Cream Sales at the local diner. The scatterplot shows the total amount earned from Ice Cream Sales in comparison to the total amount earned from Hot Chocolate Sales.

Positive, Negative, No Association?

Linear or Non-Linear?

• Positive Association, Linear

• Negative Association, Linear

• Negative Association, Non-Linear

• No Association

The scatterplot shows the time spent studying for a test and the score received on the test by several students. Based on the scatterplot, which is the best prediction of test score by a student who spends 45 minutes studying for the test?

Ms. Ovalle is planning a trip. She is researching how much the total cost of the hotel would be based on the number of nights she stays there. The scatterplot below shows the relationship between the total number of nights spent in a hotel and the total cost of the hotel.

Which statement would be the best prediction of how much Ms. Ovalle will pay for a stay at the hotel?

• Ms. Ovalle will pay about $150 for a 1 night stay.

• Ms. Ovalle will pay about $200 for a 3-night stay.

• Ms. Ovalle will pay about $475 for a 4-night stay.

• Ms. Ovalle will pay about $600 for a 6-night stay.

Which equation best represents the trend line for the data and can be used to make predictions?

• y=x+ 5

• y=x-5

• y = -x + 5

• y = -5x + 5

Roger is buying tickets for his friends to go to the baseball game.

Predict the cost of a ticket if the distance from the playing field is 1,100 ft.

• $60

• $70

• $100

• Ticket Prices

Salma has a part-time job at an ice skating rink selling hot cocoa. She decided to plot the number of hot cocoas she sold relative to the day's high temperature and then draw the line of best fit. How many hot cocoas would you predict Salma to sell if the day's high temperature were 8°F?

• 84 Hot Cocoas Sold

• 87 Hot Cocoas Sold

• 85 Hot Cocas Sold

• 76 Hot Cocoas Sold

Bentley's math teacher plots student grades on their weekly quizzes against the number of hours they say they study on the pair of coordinate axes and then draws the line of best fit.

Write an equation that represents the line of best fit.

Demarcus is keeping track of the number of Fortnite players in a tournament every hour. Which equation best fits the data?

• y = 2x - 10

• y = 10x - 2

• y = -2x + 10

• y = -5x + 10

Maria keeps track of attendance for her student council meetings.

For the last 8 meetings, Maria's attendance data are:

6, 8, 8, 12, 16, 13, 11, 15

What is the mean absolute deviation of the data?