Association and Scatter Plots REVIEW

What type of association would you expect between the length of a movie and the number of actors in the movie?

• Positive association

• Negative association

• No association

• Cannot be determined from the given information

If a musician spends more hours practicing, what type of association would you expect with the number of mistakes made in a performance?

• Positive association

• Negative association

• No association

• Cannot be determined from the given information

George observes that as one set of numerical data decreases, the other set also decreases. What type of association is this?

• Positive association

• Negative association

• No association

• Cannot be determined from the given information

Describe the association between the number of steps walked and the hours of TV watched as shown in the scatter plot.

• As the number of steps walked increases, the hours of TV watched also increases.

• As the number of steps walked increases, the hours of TV watched decreases.

• There is no association between the number of steps walked and the hours of TV watched.

• The scatter plot does not provide enough information to determine the association.

Are there any outliers in the scatter plot of steps walked versus hours of TV watched?

• Yes, there are outliers in the data.

• No, there are no outliers in the data.

• The data shows clustering instead of outliers.

• The scatter plot does not provide enough information to determine if there are outliers.

Is there any clustering in the scatter plot of steps walked versus hours of TV watched?

• Yes, there is clustering in the data.

• No, there is no clustering in the data.

• The data shows outliers instead of clustering.

• The scatter plot does not provide enough information to determine if there is clustering.

Predict the number of steps walked by a person who watched 4 hours of TV.

• 2,000 steps

• 4,000 steps

• 6,000 steps

• 8,000 steps

Based on the table provided, if a family spent $50 on their electricity bill, how many kilowatt hours of energy did they likely use?

• 400 kilowatt hours

• 550 kilowatt hours

• 690 kilowatt hours

• 737 kilowatt hours

The Ripley family spent $50 on their electricity bill last month. Predict the number of kilowatt hours of energy used by the family.

• 400 kilowatt hours

• 550 kilowatt hours

• 690 kilowatt hours

• 737 kilowatt hours

Write an equation for the trend line shown in the scatter plot with the points (1, 20) through (10, 90).

• y = 10x - 10

• y = 8x + 12

• y = 7x + 13

• y = 9x + 11