Rainfall and corn crop yield reported for the 38 years from 1890 through 1927 gi

Question

Rainfall and corn crop yield reported for the 38 years from 1890 through 1927 give us the scatterplot shown below with an r = 0.0426. Yield is the number of ears of corn measured in metric tons per hectare, rainfall is in inches.

Based on corn crop yield from Ezekiel, M. and K. A. Fox. (1959). Methods of Correlation and Regression Analysis. Wiley: New York.

The plot shows a positive linear relationship between the inches of rainfall and the size of the corn yield.

Which of the following is an appropriate interpretation of the relationship in the data shown above?

A The more rain, the lower the yield of corn.

B Rainfall seems to have a positive effect on the yield of corn.

C The growth rate of corn is positively affected by more rainfall.

Explanation / Answer

The growth rate of corn is certainly higher with higher rains but when the rain passes a certain point of 1 it begins to dimnish, But overall according to the graph rainfall has positive effect on growth of crop

B) Is the answer

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