Measuring Associations

Hector surveyed 500 people and asked them how far they drive to work and what the last digit of their phone number is. He used the results to make a scatter plot. What type of association should he expect to see in the scatter plot?

• Positive Association

• Negative Association

• No Association

Jules conducted a survey and asked 100 people how many years of education they have and what their annual income is. She used the results to make a scatter plot. What type of association should he expect to see in the scatter plot?

• Positive Association

• Negative Association

• No Association

Which best describes the association shown in the scatter plot?

• Positive Association

• Negative Association

• No Association

Which best describes the association shown in the scatter plot?

• Positive Association

• Negative Association

• No Association

Which scatter plot could be used to show the relationship between a person's age and a person's height?

• #3

• #4

• #5

• #6

Which scatter plot could be used to show the relationship between a person's age and the number of syllables in a person's first and last name?

• 3

• 4

• 5

• 6

Which would NOT likely be the variables represented on the scatter plot?

• The number of miles driven and the gallons of gas used.

• The number of students in a school and the number of unused lockers.

• The number of items ordered at a restaurant and the cost of the bill.

• The number of customers in a store and the length of the wait at the register.

Which scatter plot has a stronger association?

• Scatter Plot A because the points are closer together.

• Scatter Plot B because the points are further apart.

Mrs. Dominick's class did a survey about the number of chores students did and the amount of allowance that student earned. Bryan thinks the association is negative because they found as the number of chores decreased, the amount of allowance decreased. Is Bryan correct?

• Yes, if both variables are decreasing that is a negative association.

• No, if both variables are decreasing that is a positive association.

Which scatter plot appears to be linear?

• Scatter Plot A

• Scatter Plot B