Description

The bigcity data frame has 49 rows and 2 columns.

The 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 city data frame consists of the first 10 observations in bigcity.

Usage

Format

This data frame contains the following columns:

u

The 1920 population.

x

The 1930 population.

Source

The data were obtained from

Cochran, W.G. (1977) Sampling Techniques. Third edition. John Wiley

References

Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.