Question

Ratio's between heights and weights of sports car tires are : W 72 73 72 70...

Ratio's between heights and weights of sports car tires are :

W

72

73

72

70

70.5

70

70

68.5

70

71

82

H

125

119

126

116

121

120

120

110

123

115

34

Use R to answer the following questions.

Estimate the height for tire with weight 74 lbs.

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

> h <- read.csv("C:/Users/pcc/Desktop/h.csv")

>   View(h)

> dim(h)

[1] 11 2

> ## Linear regression ##
> fit=lm(H~W,data = h)
> fit
 
Call:
lm(formula = H ~ W, data = h)
 
Coefficients:
(Intercept)            W  
    572.173       -6.419 
> ## Estimted height for tire with weight 74 lbs ##

> pr=data.frame(W=74)

> predict(fit,pr)

       1

97.13773

## So the estimated height for tire when weight is equal to 74 is 97.13771 ##
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