Question

Consider the following data for a dependent variable y and two independent variables, 21 and 22. 94 118 143 212 Round your all answers to two decimal places. Enter negative values as negative numbers, if necessary.

Answer 1

the R coding for following model buildings are provided:

> y <- c(94,108,112,178,94,175,170,118,143,212)
> x1 <- c(29,46,25,51,40,51,74,36,60,77)
> x2 <- c(13,10,17,17,5,9,7,13,13,16)
> mod1 <- lm(y~x1)
> mod1

Call:
lm(formula = y ~ x1)

Coefficients:
(Intercept) x1
46.346 1.923

> mod2 <- lm(y~x2)
> mod2

Call:
lm(formula = y ~ x2)

Coefficients:
(Intercept) x2
109.32 2.59

> mod3 <- lm(y~x1+x2)
> mod3

Call:
lm(formula = y ~ x1 + x2)

Coefficients:
(Intercept) x1 x2
-2.835 2.032 3.658

Ctrl by least Sanare neltod dlu the niodels parauce ley au ettimalod 46-346t 1.923Xi 45 46.346 t1:923 X45 132-881. mad2 109:32 +a 5 Gas 100-32+2:50X35 74.07 mod 3 a835+ 2.032X1+ 3.658X2 d-835 t d032 X45 3-6J8X2J 177.805