Fertility by non-Hispanic white ethnic group, etc.

In my post on American fertility rates by racial groupMike Keesey asks: 'It’d also be interesting to see what’s going on within “non-Hispanic whites”.' One can explore this question in the GSS. Let's look at ancestry group (e.g., German, French, etc.), religion, belief in God, political ideology, intelligence and education, for non-Hispanic whites. The data is limited to the 2000s, and I also constrained to those age 45 and up. Then I looked at the "CHILDS" variable, which asks the respondent how many children they have. Taking the mean of this value gives us a sense of the rank order in fertility. Note that this is not total fertility rate. That should be clear from the values being well above 2 in most cases. Additionally, I recombined some categories, so that "British" is the amalgamation of English, Scottish and Welsh ancestry. The "Irish" class almost certainly includes both Scotch-Irish (doing ...