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> head(mtcars) mpg cyl disp hp drat wt qsec vs am gear carbMazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1> fit<-lm(mpg~wt,data=mtcars)> summary(fit)
Call:lm(formula = mpg ~ wt, data = mtcars)
Residuals: Min 1Q Median 3Q Max-4.5432 -2.3647 -0.1252 1.4096 6.8727
Coefficients: Estimate Std. Error t value Pr(>|t|)(Intercept) 37.2851 1.8776 19.858 < 2e-16 ***wt -5.3445 0.5591 -9.559 1.29e-10 ***---Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Residual standard error: 3.046 on 30 degrees of freedomMultiple R-squared: 0.7528, Adjusted R-squared: 0.7446F-statistic: 91.38 on 1 and 30 DF, p-value: 1.294e-10