Name: 
 

Line of Best Fit



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 


mc001-1.jpg

Using the data plotted on the scatterplot, which is the best prediction for income in the year 2000?
A.
35,000
C.
50,000
B.
43,000
D.
57,000
 

 2. 

Which equation best represents the data shown in the scatterplot?

                       mc002-1.jpg

A.
mc002-2.jpg
B.
mc002-3.jpg
C.
mc002-4.jpg
D.
mc002-5.jpg
 

 3. 

A delivery service company maintains several vehicles. The table summarizes the cost for auto insurance related to the number of vehicles insured.

                                mc003-1.jpg

Using the equation of a line of best fit for the data, which is the closest estimate of the total cost of insuring eight vehicles?
A.
$5,050
B.
$5,200
C.
$5,500
D.
$5,950
 

 4. 

The table shows the life expectancy of a person related to the year of birth.
mc004-1.jpg

Which equation would give the best estimate of life expectancy, given the year of one’s birth?
A.
mc004-2.jpg
B.
mc004-3.jpg
C.
mc004-4.jpg
D.
mc004-5.jpg
 

 5. 

The table below gives the age x as of 2003 and the height y of five Virginia lighthouses.

Lighthouse
Age (yr)
Height (ft)
Old Point Comfort
201
54
Assateague
170
145
New Point Comfort
199
63
Cape Henry
122
164
Old Cape Henry
211
90

Predict the height of a lighthouse if its age in 2003 is 100 years. Round your answer to the nearest whole number.
A.
184 ft
C.
212 ft
B.
196 ft
D.
347 ft
 



 
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