Belgian-phones | R Documentation |
A list object with the annual numbers of telephone calls, in Belgium. The components are:
year
last two digits of the year.
calls
number of telephone calls made (in millions of calls).
phones
P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression & Outlier Detection. Wiley.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
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