Loudoun County Public Schools
AP Statistics Example: P164 # 17Fuel Economy: Here are advertised horsepower ratings and expected gas mileage for several 2001 vehicles. VehicleHorsepowerGas MileageAudi A4170 hp22 mpgBuick LeSabre20520Chevy Blazer19015Chevy Prizm12531Ford Excursion31010GMC Yuon28513Honda Civic12729Hyndai Elantra14025Lexus 30021521Lincoln LS21023Mazda MPV17018Olds Alero14023Toyota Camry19421VW Beetle 11529Make a scatterplot for these data: Use the graph paper Describe the direction, form, and strength of the plot Find the correlation between horsepower and miles per gallon.Write a few sentences telling what the plot says about fuel economy. Each of the following statements contains a blunder. In each case, explain what is wrong.“There is a high correlation between the sex of American workers and their income.”“We found a high correlation (r = 1.09) between students’ ratings of faculty teaching and ratings made by other faculty members.”“The correlation between planting rate and yield of corn was r = 0.23 bushels.” ................
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