# R Dataset / Package boot / bigcity

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## Visual Summaries

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<iframe src="https://embed.picostat.com/r-dataset-package-boot-bigcity.html" frameBorder="0" width="100%" height="307px" />
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Dataset Help

Documentation

## Population of U.S. Cities

### 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

bigcity


### 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.

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Dataset imported from https://www.r-project.org.

R Output Date
Picostat Output - Correlation Coefficients Feb 23, 2020