Number of international calls from Belgium, taken from the Belgian Statistical Survey, published by the Ministry of Economy.
A data frame with 24 observations on the following 2 variables.
Number of Calls (in tens of millions)
Year (1950 - 1973)
P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression and Outlier Detection; Wiley, page 26, table 2.
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