The following is a portion of a classic data set called the “pilot plot data” in Fitting Equations… 1 answer below »

The following is a portion of a classic data set called the “pilot plot data” in Fitting Equations to Data by Daniel and Wood, published in 1971. The response y is the acid content of material produced by titration, whereas the regressor x is the organic acid content produced by extraction and weighing.

y

x

y

X

76

123

70

109

62

55

37

48

66

100

82

138

58

75

88

164

88

159

43

28

(a) Plot the data; does it appear that a simple linear regression will be a suitable model?

(b) Fit a simple linear regression; estimate a slope and intercept.

(c) Graph the regression line on the plot in (a).

 

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