Call: lm(formula = y ~ x) Residuals: Min 1Q Median 3Q Max -0.10722 -0.08840 -0.00159 -0.00088 0.57939 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 0.0014902 0.0115763 0.129 0.898 xAmericas -0.0006081 0.0162081 -0.038 0.970 xAsia 0.0094510 0.0159978 0.591 0.555 xEurope 0.1057298 0.0138993 7.607 0.0000000000000898 *** xOceania 0.0001023 0.0203368 0.005 0.996 --- Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 Residual standard error: 0.1273 on 707 degrees of freedom Multiple R-squared: 0.1356, Adjusted R-squared: 0.1307 F-statistic: 27.72 on 4 and 707 DF, p-value: < 0.00000000000000022