CH 3 AP Stats Review

3)

• A
• B
• C
• D

Tags

CCSS.8.EE.C.8C

The scatter plot in the figure below shows the GPA of the students of a class versus their commute time. Which of the following statements is true?

• The relationship between GPA and commute time is moderate positive linear.
• The relationship between GPA and commute time is moderate negative linear.
• The scatter plot does not have any outliers.

Tags

CCSS.HSS.ID.B.5

The graph shows the diameters of a number of white oak trees versus their ages.
The growth factor of white oak trees is approximatively:

• 0.2 years/inch
• 2 years/inch
• 5 years/inch
• 10 years/inch

Tags

CCSS.HSF.IF.B.4

What is the correlation?

• Negative correlation
• No correlation
• Positive correlation
• Cannot be determined

Tags

CCSS.HSF-LE.A.1B

Which is TRUE?
I.  Random scatter in the residuals indicates a linear model.
II.  If two variables are very strongly associated, then the correlation between them will be near 1 or -1.
III.  Changing the units of measurement for x or y changes the correlation coefficient.

• I only
• II only
• I and II only
• I, II and III

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.9

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6

What type of correlation describes the following sentence:
The temperature outside and the number of hot chocolate sold at a football game.

• positive
• negative 
• no

Tags

CCSS.HSS.ID.B.5

A correlation shows that two things are

• related
• causing each other
• unrelated
• causation

Tags

CCSS.HSS.ID.C.9

What should a residual plot look like?

• Distinct Pattern
• Curve
• Random with no pattern
• A few clumps

How do you calculate a residual?

• Observed - Predicted
• Predicted - Observed