Immigrants from Ireland vs Celtic 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 168,846,519 people shows a mild negative correlation between the proportion of Celtics and average family size in the United States with a correlation coefficient (R) of -0.320 and weighted average of 3.11, a difference of 0.58%.

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%), Northern European (3.13, a difference of 0.060%), Australian (3.13, a difference of 0.070%), and Czechoslovakian (3.13, a difference of 0.090%). Similarly, the demographic groups most similar to Celtics are English (3.11, a difference of 0.040%), Soviet Union (3.11, a difference of 0.080%), Immigrants from Austria (3.12, a difference of 0.11%), Immigrants from Canada (3.12, a difference of 0.11%), and Immigrants from North America (3.12, a difference of 0.14%).