Scotch-Irish vs South American Indian Median Family Income

The statistical analysis conducted on geographies consisting of 547,821,252 people shows a poor negative correlation between the proportion of Scotch-Irish and median family income in the United States with a correlation coefficient (R) of -0.179 and weighted average of $99,591. Similarly, the statistical analysis conducted on geographies consisting of 164,518,515 people shows a poor negative correlation between the proportion of South American Indians and median family income in the United States with a correlation coefficient (R) of -0.185 and weighted average of $103,624, a difference of 4.1%.

In terms of median family income, the demographic groups most similar to Scotch-Irish are White/Caucasian ($99,800, a difference of 0.21%), Immigrants from Thailand ($99,840, a difference of 0.25%), Spanish ($99,977, a difference of 0.39%), Yugoslavian ($100,119, a difference of 0.53%), and Immigrants from Africa ($100,256, a difference of 0.67%).

In terms of median family income, the demographic groups most similar to South American Indians are English ($103,684, a difference of 0.060%), Immigrants from Peru ($103,534, a difference of 0.090%), Slovak ($103,729, a difference of 0.10%), Sierra Leonean ($103,859, a difference of 0.23%), and Czechoslovakian ($103,273, a difference of 0.34%).