The Elimination of Unknown Ages in the 1940 Population Census

19 Nebraska 1940 population census 5,000 ASSIGNED AGES actual and estimated age assigners age class age distribution age of husband Ages were assigned ambiguous entries broad occupational group cell coders column comparison deck of 250 deck of cards employment information estimated age Farm Laborers folio frequency distribution grade of school H-4 Use Table Head or wife heads and wives highest grade completed hotel guests household where enumerated husband and wife husbands and wives Incidental Check Ages infant deck kindred workers known ages Labor except Farm lodgers and hotel MALE FEMALE marital status Married Marshall Counties master indicator merator mother deck North Dakota Number Age Percent number of assigned number of broad number of months Number of persons Occupation decks parent partial entry procedure proportion recorded age relationship Scatter diagram school completed ages suppositious ages table 15 Table 9 tables and cards ten's digit tion unknown ages