bigcity data frame has 49 rows and 2 columns.
city data frame has 10 rows and 2 columns.
The measurements are the
population (in 1000's) of 49 U.S. cities in 1920 and 1930. The 49 cities are
a random sample taken from the 196 largest cities in 1920. The
frame consists of the first 10 observations in
This data frame contains the following columns:
The 1920 population.
The 1930 population.
The data were obtained from
Cochran, W.G. (1977) Sampling Techniques. Third edition. John Wiley
Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.