Two Variable Statistics Unit Test

What can be the relationship statement for this scatter plot?

• As the outside temperature increases, the ice cream sales increase.

• Ice cream sales depend on temperature?

• There is no relationship between sales and temperature.

• As the outside temperature decreases, the ice cream sales increase.

Tags

CCSS.HSF-LE.A.1B

Given this regression information, you can describe the correlation as

• Weak Positive

• Weak Negative

• Strong Positive

• Strong Negative

Tags

CCSS.HSF.IF.B.4

Using the line of best fit, what is the best estimation for the population in 1960?

• 150 million

• 180 million

• 160 million

• 200 million

• Students studied an average of 47 minutes

• Students scored an average of 47 points when they studied

• Students earned 1.4 more points when studying

• Students who studied 0 minutes, earned an average of 47 points.

Tags

CCSS.HSF.LE.B.5

Given the regression information, the correlation can be described as

• Weak Positive

• Weak Negative

• Strong Positive

• Strong Negative

Tags

CCSS.HSF.IF.B.4

Given the regression information, what is the equation of the linear regression?

• y = -3.28x + 55.5

• y = -0.66x + 55.5

• y = 55.5x - 3.28

• y = 55.5x + 3.28

Which line matches the scatter plot the best?

• A

• B

• C

• D

• NONE

The graph shows a line of best fit for data collected on the amount of income earned by lawn companies in relation to the number of yards mowed. What is the equation of the trend line?

Look at the scale on each axis.

Tags

CCSS.8.EE.B.5

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 140 pages.

• 12 Chapters

• 14 Chapters

• 19 Chapters

• 21 Chapters

What type of association does this graph have?

• Positive

• Negative

• None

• Not enough information