Name:    Line of Best Fit

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

1.

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?

 A. B. C. D.

3.

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

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.

Which equation would give the best estimate of life expectancy, given the year of one’s birth?
 A. B. C. D.

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