ex0915 {Sleuth3}

Rainfall and Corn Yield

Description

Data on corn yield and rainfall in six U.S. corn–producing states (Iowa, Nebraska, Illinois, Indiana, Missouri and Ohio), recorded for each year from 1890 to 1927.

Usage

ex0915

Format

A data frame with 38 observations on the following 3 variables.

Year

year of observation (1890–1927)

Yield

average corn yield for the six states (in bu/acre)

Rainfall

average rainfall in the six states (in in/year)

Source

Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.

References

Ezekiel, M. and Fox, K.A. (1959). Methods of Correlation and Regression Analysis, John Wiley & Sons, New York.

Examples

str(ex0915)