Description

A monthly series of inward movement of residential telephone extensions in a fixed geographic area from January 1966 to May 1973.

Usage

Format

An object of class "data.frame".

Details

Format: numeric vector of size 89.

Source

Source Engineering, 2nd. Edition, New York, John Wiley.

References

Brubacher. S.R. (1974), Time series outlier detection and modeling with interpolation, Bell Laboratories Technical Memo.

Examples