A sample was drawn of one-acre plots
of land planted with corn. The crop yields were
recorded. Calculate the descriptive statistics you
judge to be useful. Interpret these statistics.
4.130 Refer to Exercise 4.129. For each plot, the amounts
of rainfall were also recorded.
a. Compute the coefficient of determination.
b. Determine the coefficients of the least squares line.
c. Describe what these statistics tell you about the
relationship between crop yield and rainfall.
d. Discuss the information obtained here and in
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