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A major car magazine has recently collected data on 30 leading cars in the U.S.market.It is interested in building a multiple regression model to explain the variation in highway miles.The following correltion matrix has been computed from the data collected:
The analysts also produced the following multiple regression output using curb weight,cylinders,and horsepower as the three independent variables.Note,a number of the output fields are missing,but can be determined from the information provided.
Based on the information provided,holding the other variables constant,increasing horsepower by one unit results in an average decrease in highway mileage by 0.016 miles per gallon.
Ozone Depletion
The thinning and reduction of the ozone layer in the Earth's atmosphere, primarily caused by the release of chemical compounds containing bromine and chlorine.
Agricultural
Relating to the science, art, and practice of cultivating land, producing crops, and raising livestock.
Biodiversity
The variety of life in the world or in a particular habitat or ecosystem, including species diversity, genetic diversity, and ecosystem diversity.
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Referring to substances or practices used in the treatment of illness or to enhance physical or mental health.
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