Determine the least- squares regressionline

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The following data show U.S. production of motorvehicles versus tons of domestic steel shipped for motor vehiclemanufacture.

                 x=U.S.Production                                  y=Tons of

Year          of MotorVehicles                                 DomesticSteel

2000                12.83                                                   16.06

2001                 11.52                                                   14.06

2002                 12.33                                                  14.00

2003                  12.15                                                  15.88

2004                  12.02                                                   13.86

a. Determine the least- squares regressionline and calculate r.

b. What proportion of the variabilityin steel shipments for motor vehicles is explained by theregression equation?

c. During a year in which U.S. productionof motor vehicles is 12.0 million,what would be the prediction forthe number of tons of domestic steel used for vehicle production?

Reference no: EM13337951

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