Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.11977 -0.03834 -0.00762  0.02990  0.34328 

Coefficients:
                     Estimate Std. Error t value Pr(>|t|)
(Intercept)          0.066207   0.049595   1.335    0.184
xCaribbean          -0.028754   0.055449  -0.519    0.605
xCentral America     0.011304   0.056235   0.201    0.841
xCentral Asia        0.101628   0.064027   1.587    0.115
xEastern Africa      0.052764   0.053019   0.995    0.322
xEastern Asia        0.023599   0.060741   0.389    0.698
xEastern Europe     -0.009509   0.054829  -0.173    0.863
xMelanesia          -0.001569   0.060741  -0.026    0.979
xMicronesia         -0.027859   0.070138  -0.397    0.692
xMiddle Africa       0.049036   0.057267   0.856    0.393
xNA                 -0.056252   0.085901  -0.655    0.514
xNorthern Africa     0.015224   0.060741   0.251    0.802
xNorthern America   -0.042239   0.070138  -0.602    0.548
xNorthern Europe    -0.058084   0.054329  -1.069    0.287
xPolynesia           0.109322   0.070138   1.559    0.122
xSouth America      -0.007942   0.056235  -0.141    0.888
xSouth-Eastern Asia  0.014921   0.055449   0.269    0.788
xSouthern Africa     0.020659   0.064027   0.323    0.747
xSouthern Asia      -0.011661   0.057267  -0.204    0.839
xSouthern Europe     0.029835   0.053569   0.557    0.579
xWestern Africa      0.066818   0.053019   1.260    0.210
xWestern Asia        0.005522   0.053274   0.104    0.918
xWestern Europe     -0.036840   0.055449  -0.664    0.508

Residual standard error: 0.07014 on 126 degrees of freedom
Multiple R-squared:  0.2692,	Adjusted R-squared:  0.1417 
F-statistic:  2.11 on 22 and 126 DF,  p-value: 0.005385