Data collected by Kenneth G. Hubbard on soil temperature at 20 cm depth in Mitchell, Nebraska for 17 years (1976-1992) The variable month is the month number.
This data frame contains the following columns:
Months beginning Jan, 1976
Average soil temperature, degrees C
Kenneth G. Hubbard
Weisberg, S. (2014). Applied Linear Regression, 4th edition. Hoboken NJ: Wiley.