# Testing for…

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Input

Output

Testing for regression

Input:

advertising=c(1,2,3,4,5) sales=c(1,1,2,2,4) sales.Reg=lm(sales~advertising) summary(sales.Reg)Output:

> advertising=c(1,2,3,4,5) > sales=c(1,1,2,2,4) > > sales.Reg=lm(sales~advertising) > summary(sales.Reg) Call: lm(formula = sales ~ advertising) Residuals: 1 2 3 4 5 4.000e-01 -3.000e-01 -3.237e-17 -7.000e-01 6.000e-01 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -0.1000 0.6351 -0.157 0.8849 advertising 0.7000 0.1915 3.656 0.0354 * --- Signif. codes: 0 "***" 0.001 "**" 0.01 "*" 0.05 "." 0.1 " " 1 Residual standard error: 0.6055 on 3 degrees of freedom Multiple R-squared: 0.8167, Adjusted R-squared: 0.7556 F-statistic: 13.36 on 1 and 3 DF, p-value: 0.03535 >

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