SAT Math 5

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The average speed of serve and number of years of training were recorded for 20 tennis players and plotted in the grid above. Which of the following statements is supported by the plotted data?

• A) The player with the least number of years of training had the slowest serve.

• B) The player with the highest number of years of training had the fastest serve.

• C) More than half of the players had a serve exceeding 110 miles per hour.

• D) More than half of the players had more than 5 years of training.

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• (A) -3

• (B) -2

• (C) -1

• (D) 2

Which of the following is the best interpretation of the meaning of the slope of the line of best fit?

• A) The predicted increase in a car's horsepower for every mile per gallon decrease in fuel efficiency

• B) The predicted decrease in a car's horsepower for every mile per gallon decrease in fuel efficiency

• C) The predicted mile per gallon increase in a car's fuel efficiency for every decrease of one horsepower

• D) The predicted mile per gallon decrease in a car's fuel efficiency for every decrease of one horsepower

How many of the 15 cars have a fuel efficiency below the one predicted by the line of best fit?

• A) 2

• B) 4

• C) 5

• D) 6