Data Dictionary: Census 1970
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Survey: Census 1970
Data Source: Social Explorer & U.S. Census Bureau
Table: T9. Age (detailed version) [21]
Universe: Total population
Table Details
T9. Age (detailed version)
Universe: Total population
Variable Label
T009_001
T009_002
T009_003
T009_004
T009_005
T009_006
T009_007
T009_008
T009_009
T009_010
T009_011
T009_012
T009_013
T009_014
T009_015
T009_016
T009_017
T009_018
T009_019
T009_020
T009_021
Relevant Documentation:
Excerpt from: Social Explorer; U.S. Census Bureau; 1970 Census Users’ Guide; U. S. Government Printing Office, Washington, D. C., 1970.
 
Age
Age is usually determined in completed years as of the time of enumeration from replies to a question on month and year of birth. (Only year of birth by quarter is actually carried on census basic records.) Age is estimated from other information reported in the schedule if the respondent fails to indicate birth date. Age is tabulated by single years from under 1 year, 1, 2, 3, . . . to 98, 99, and 100 years or more; and by many different age groupings, such as five-year age groups. Median age is calculated as the value which divides the age distribution into two equal parts, one-half the cases falling below this value, one-half above. Median age is generally computed from the age intervals or groupings shown in the particular tabulations, except that median age in tabulations of single years of age is based on five-year age groups.