generation [factor] Three categories of generations in the US: First, Second, Third and higher (see note)
percent [numeric] percent of the total US population rounded to the nearest 0.1%
Note: from the US Census Bureau: The foreign born are considered first generation. Natives with at least one foreign-born parent are considered second generation. Natives with two native parents are considered third-and-higher generation.
An object of class tbl_df (inherits from tbl, data.frame) with 36 rows and 4 columns.
An object of class tbl_df (inherits from tbl, data.frame) with 72 rows and 5 columns.
An object of class tbl_df (inherits from tbl, data.frame) with 72 rows and 5 columns.
An object of class tbl_df (inherits from tbl, data.frame) with 108 rows and 5 columns.
An object of class tbl_df (inherits from tbl, data.frame) with 108 rows and 5 columns.