Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.03312 -0.02805 -0.01927  0.01099  0.48327 

Coefficients:
             Estimate Std. Error t value   Pr(>|t|)    
(Intercept)  0.021696   0.004529   4.790 0.00000203 ***
xAmericas    0.003647   0.006342   0.575     0.5654    
xAsia        0.011424   0.006259   1.825     0.0684 .  
xEurope      0.007322   0.005438   1.346     0.1786    
xOceania    -0.002392   0.007957  -0.301     0.7638    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04982 on 707 degrees of freedom
Multiple R-squared:  0.007507,	Adjusted R-squared:  0.001892 
F-statistic: 1.337 on 4 and 707 DF,  p-value: 0.2546