M8 - QUIZ Review over Scatterplots, Correlations, and LOBF

Which of these points appears to be an “Outlier?”

• A

• B

• C

• D

Tags

CCSS.HSS.ID.A.3

What type of correlation would you likely see with:

The amount of time spent working compared to the amount of money earned

• positive correlation

• negative correlation

• no correlation

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

Which of the following could be the equation of the LINE OF BEST FIT for the data shown here?

• y = 1.3X – 16

• y = -1.3x + 16

• y = -1.3x – 16

• y = 1.3x + 16

Does this data show a “linear” or “nonlinear” association?

• linear

• nonlinear

Tags

CCSS.8.F.A.3

Suppose data related to the AVERAGE Temperature outside (T) and the number of winter Coat (C) sold at a store is collected and graphed. The LINE OF BEST FIT has the equation C = -3T + 150. Use this equation to predict the number of coats sold when the average temperature outside is 20°.

• 40

• 75

• 90

• 115

What type of correlation do the data at the right represent?

• positive

• negative

• no correlation

What type of correlation would you likely see with:

The amount of time students spent playing video games the night before a test compared to their respective grades on that test

• positive correlation

• negative correlation

• no correlation

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

If two quantities A and B exhibit a negative correlation, then as quantity A increases, quantity B would . . .?

• stay the same

• increase

• decrease

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

Which of the following could be the equation of the LINE OF BEST FIT for the data shown here?

• y = 3x – 8

• y = -3x – 8

• y = -3x + 8

• y = 3x + 8

Suppose a LINE OF BEST FIT passes through the points (4, 8) and (6, 2). The SLOPE of this line is . . .?

• -3

• -6

• 4

• 2

Tags

CCSS.HSS.ID.C.7