Data in a Table and Scatter Plots

Which of the scatter plots below shows a stronger association, and why?

• Scatter plot A; its slope is greater than B.

• Scatter plot A; its points of data are closer together than B.

• Scatter plot B; its slope is positive.

• Scatter plot B; it does not have any data points that are outliers.

John and Bob each made a scatter plot to represent the data in the table as shown below. Who made the scatter plot correctly?

• John only

• Bob only

• Both John and Bob

• Neither John nor Bob

Are there any outliers in the data?

• Yes; Week 10 is an outlier since it is the greatest data point.

• Yes; Week 1 is an outlier since it is the lowest data point.

• Yes; Week 7 is an outlier since it does not fit the general trend of the data.

• No; there are not any outliers in the data.

Write an equation in slope intercept form (y=mx+b) for the trend line shown on the scatter plot.

Which of the following is NOT a true statement about the scatter plot?

• The association of the scatter plot is positive.

• The association of the scatter plot is linear.

• For every additional day of a trip, the weight of a suitcase increases 5 pounds.

• For every 5 additional days of a trip, the weight of a suitcase increases one pound.

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

• A

• B

• C

• D

Tags

Scatter Plots

Line of Best Fit

Statistics

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.

Tags

Statistics

Scatter Plots

Find the equation of the line of best fit for the given data

• y=163.41x + 4.19

• y=-163.41x + 4.19

• y=-4.19x + 163.41

• y= 4.19x - 163.41

• There is no linear correlation of the data set

Tags

Statistics

Line of Best Fit

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

• A

• B

• C

• D

Tags

Statistics

Scatter Plots

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20

• y = -x + 19

• y = x + 20

• y = 2/3x + 15

• y = -5/4x + 21

Tags

Statistics

Line of Best Fit