Make Predictions from Scatterplots

What is the primary purpose of using a trend line in scatterplots?

• To reduce the amount of data needed

• To confuse the viewer with complex data

• To predict future values based on past data

• To create a visually appealing graph

Why might scatterplot problems appear frustrating according to the teacher?

• Multiple answers may seem correct

• They do not involve real data

• They require advanced mathematical skills

• They are too simple to solve

What trend does Stephanie's savings account follow in the scatterplot?

• Negative

• Positive

• Exponential growth

• No clear trend

By week seven, how much money is predicted to be in Stephanie's account?

• $50

• $25

• $15

• $0

What does the teacher suggest about the graph's design in Stephanie's example?

• It lacks any useful data

• It is intentionally confusing

• It is designed to be easily interpretable

• It is outdated

What year is being analyzed for the cost of new homes in the Texas town scatterplot?

• 2010

• 2008

• 2007

• 2005

What is the predicted cost of a new home in 2008 in the Texas town?

• $225,000

• $210,000

• $180,000

• $125,000

How should students mark their answers in the quiz?

• Use decimal points even for whole numbers

• Estimate answers without using exact numbers

• Only mark the negative sign when necessary

• Always include either a positive or negative sign

What does the teacher encourage students to do after completing the quiz?

• Bring the paper for review

• Discuss answers with peers

• Submit the quiz immediately

• Start another quiz

What is the correct way to fill out the answer for predicted values in the quiz?

• Use approximate values

• Fill in exact values only

• Include positive or negative signs

• Ignore units of measurement