Find the estimated regression line

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Biology and Environment Science

The Virginia Cooperative Extension Service provides yield data and other performance statistics on barley as well as a summary of the growing season. A random sample of barley varieties was obtained and the 2013 yield ( y, in bushels per acre) and the date headed (x, number of days since the beginning of the calendar year at which 50% of the heads have emerged from the plants) are given in the following table.

Date headed

115

111

114

116

115

Yield

88

87

87

84

82

Date headed

120

119

113

112

119

Yield

82

81

78

82

81

a. Find the estimated regression line.

b. Complete the ANOVA table (without the p value).

c. Do you believe that the date headed is a good predictor of yield? Why or why not?

Reference no: EM131436935

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