Number of International Calls from Belgium

Number of international calls from Belgium, taken from the Belgian Statistical Survey, published by the Ministry of Economy.

data(telef, package="robustbase")

Format

A data frame with 24 observations on the following 2 variables.

Calls

Number of Calls (in tens of millions)

Year

Year (1950 - 1973)

Source

P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression and Outlier Detection; Wiley, page 26, table 2.

Examples

data(telef)
summary(lm.telef <- lm(Year~., data=telef))
#> 
#> Call:
#> lm(formula = Year ~ ., data = telef)
#> 
#> Residuals:
#>    Min     1Q Median     3Q    Max 
#> -8.824 -3.279 -1.044  1.792 12.732 
#> 
#> Coefficients:
#>             Estimate Std. Error t value Pr(>|t|)    
#> (Intercept)   58.566      1.570  37.304   <2e-16 ***
#> Calls          0.587      0.193   3.041    0.006 ** 
#> ---
#> Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
#> 
#> Residual standard error: 6.067 on 22 degrees of freedom
#> Multiple R-squared:  0.2959,	Adjusted R-squared:  0.2639 
#> F-statistic: 9.247 on 1 and 22 DF,  p-value: 0.005998
#>