Immigrants from Ireland vs Northern European Average Family Size

The statistical analysis conducted on geographies consisting of 240,751,818 people shows a moderate negative correlation between the proportion of Immigrants from Ireland and average family size in the United States with a correlation coefficient (R) of -0.436 and weighted average of 3.13. Similarly, the statistical analysis conducted on geographies consisting of 405,947,196 people shows a poor negative correlation between the proportion of Northern Europeans and average family size in the United States with a correlation coefficient (R) of -0.146 and weighted average of 3.13, a difference of 0.060%.

In terms of average family size, the demographic groups most similar to Immigrants from Ireland are Immigrants from Serbia (3.13, a difference of 0.010%), Slavic (3.13, a difference of 0.060%), Australian (3.13, a difference of 0.070%), Immigrants from Switzerland (3.13, a difference of 0.090%), and Czechoslovakian (3.13, a difference of 0.090%). Similarly, the demographic groups most similar to Northern Europeans are Slavic (3.13, a difference of 0.010%), Czechoslovakian (3.13, a difference of 0.020%), Immigrants from Serbia (3.13, a difference of 0.060%), Immigrants from Northern Europe (3.13, a difference of 0.060%), and Immigrants from Australia (3.13, a difference of 0.080%).