Call: lm(formula = y ~ x) Residuals: Min 1Q Median 3Q Max -0.07436 -0.01306 -0.00704 -0.00196 0.52423 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 0.0070554 0.0053676 1.314 0.189 xAmericas -0.0004798 0.0075153 -0.064 0.949 xAsia 0.0673084 0.0074178 9.074 <0.0000000000000002 *** xEurope 0.0060144 0.0064448 0.933 0.351 xOceania -0.0042119 0.0094297 -0.447 0.655 --- Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 Residual standard error: 0.05904 on 707 degrees of freedom Multiple R-squared: 0.1586, Adjusted R-squared: 0.1539 F-statistic: 33.32 on 4 and 707 DF, p-value: < 0.00000000000000022