Description

In 2002, Colorado experienced a drought and many towns on the front range (a geographical district close to the Rocky mountains) issued mandatory or voluntary water restirctions on outdoor watering. These data are comparative water usage between 2001 and 2002 for five such towns.

Format

A data frame with 5 observations on the following 3 variables.

town

a factor with levels A, B, C, D and E

j2001

water usage (millions of gallons) in 2001

j2002

water usage (millions of gallons) in 2001

References

Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)

Examples