Scatter Plot Review

When determining the line of best fit for the scatter plot shown, what does the slope appear to be?

• -2/3

• -1/2

• -1/3

• -1/4

The scatterplot shows the arm span of 8th grade students according to their height. If a student in this class is 55 inches tall, what is their approximate arm span?

• 48 inches

• 53 inches

• 60 inches

• 68 inches

The equation y = Px + Q corresponds to a line that fits the data in the scatter plot shown. What are the signs of P and Q?

• P is positive. Q is negative.

• P is negative. Q is positive.

• Both P and Q are positive.

• Both P and Q are negative.

According to the graph, how many minutes are on a CD with 13 songs?

• 40 - 50 minutes

• 50 - 60 minutes

• 60 - 70 minutes

• 70 - 80 minutes

What does the scatter plot suggest about the relationship between a person's age and the time spent per day watching TV?

• There is no association between the ages and the time spent watching TV.

• There is a positive association between the ages and the time spent watching TV.

• As the ages decrease, the time spent watching TV increases.

• As the ages increase, the time spent watching TV decreases.

Which of the following statements is true given the graph shown?

• The rate of increasing enrollment is the same for high school as college because of the overlapping time period.

• The rate of increasing enrollment is the same for high school as college because the slopes are the same.

• The rate of increasing enrollment is greater for high school than college because the slopes are the same.

• The rate of increasing enrollment is greater for high school than college because high school enrollment is always greater than college.

According to the graph, what happens to the average height of females over the age of 60?

• The average height of females over the age of 60 decreases.

• The average height of females over the age of 60 increases.

• The average height of females remains constant.

• The average height of females decreases, then increases.

The equation y = Cx + D corresponds to a line that fits the data in the scatter plot shown. What are the signs of C and D?

• C is positive. D is negative.

• C is negative. D is positive.

• Both C and D are positive.

• Both C and D are negative.

When determining the line of best fit for the scatter plot shown, what does the slope appear to be?

• -1/4

• 1/2

• 1/3

• 1/4

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D