Scotch-Irish vs Costa Rican Median Male Earnings

The statistical analysis conducted on geographies consisting of 547,724,250 people shows a weak negative correlation between the proportion of Scotch-Irish and median male earnings in the United States with a correlation coefficient (R) of -0.290 and weighted average of $53,658. Similarly, the statistical analysis conducted on geographies consisting of 253,565,867 people shows a moderate negative correlation between the proportion of Costa Ricans and median male earnings in the United States with a correlation coefficient (R) of -0.433 and weighted average of $54,279, a difference of 1.2%.

In terms of median male earnings, the demographic groups most similar to Scotch-Irish are Guamanian/Chamorro ($53,661, a difference of 0.010%), Kenyan ($53,647, a difference of 0.020%), Uruguayan ($53,680, a difference of 0.040%), Puget Sound Salish ($53,704, a difference of 0.090%), and Immigrants from Eastern Africa ($53,713, a difference of 0.10%). Similarly, the demographic groups most similar to Costa Ricans are Sierra Leonean ($54,279, a difference of 0.0%), Celtic ($54,242, a difference of 0.070%), Iraqi ($54,182, a difference of 0.18%), Immigrants ($54,168, a difference of 0.21%), and Spaniard ($54,401, a difference of 0.22%).