r2 Find the average increase in the response variable when

r²

= ____________

Find the average increase in the response variable when the explanatory variable increases by one unit. (Round your answers to four decimal places.) ______________

	=	_______ x + ________
r2		= ____________ Find the average increase in the response variable when the explanatory variable increases by one unit. (Round your answers to four decimal places.) ______________

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Solution

using minitab the regression equation is

y=0.1193x+631.3679

here R² is 0.8827

hence correlation coefficient is R=0.9395

let x is increased by 1 to x+1

then y1=0.1193(x+1)+631.3679

hence increase is y1-y=0.1193(x+1)+631.3679-0.1193x+631.3679=0.1193 [answer]