The World's Telephones
Usage
data(phones)
Format
A matrix with 7 rows and 8 columns.Description
The number of telephones in various regions of the world (in
thousands). The columns of the matrix give the figures for
a given region, and the rows the figures for a year.
The regions are: North America, Europe, Asia, South America,
Oceania, Africa, Central America.
The years are: 1951, 1956, 1957, 1958, 1959, 1960, 1961.
Source
AT&T (1961). The World's Telephones.References
McNeil, D. R. (1977). Interactive Data Analysis. New York: Wiley.