Persons of Spanish Origin in the United States

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U.S. Department of Commerce, Bureau of the Census, 1978
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Halaman 8 - Data reliability The data in this bulletin are estimates from a scientifically selected probability sample. There are two types of errors possible in an estimate based on a sample survey, sampling and nonsampling. Sampling errors occur because observations come only from a sample and not from an entire population. The sample used for this survey is one of a number of possible samples of the same size that could have been selected using the sample design. Estimates derived from the different samples...
Halaman 5 - family,' as used here, refers to a group of two or more persons related by blood, marriage, or adoption and residing together; all such persons are considered as members of the same family.
Halaman 7 - Also included as unemployed are civilians who did not work at all during the reference week and were waiting to be called back to a job from which they had been laid off.
Halaman 5 - ... years 20 and 21 years 22 to 24 years 25 to 29 years 30 to 34 years 35 to...
Halaman 5 - ... twin cities" with a combined population of at least 50,000. In addition to the county, or counties, containing such a city or cities, contiguous counties are included in an SMSA if, according to certain criteria, they are essentially metropolitan in character and are socially and economically integrated with the central city.
Halaman 6 - ... an elementary or high school diploma or a college, university, or professional school degree.
Halaman 8 - Nonsampling variability. Nonsampling errors can be attributed to many sources, eg, inability to obtain information about all cases in the sample, definitional difficulties, differences in the interpretation of questions, inability or unwillingness...
Halaman 7 - Professional, technical, and kindred workers; managers and administrators, except farm; sales workers; and clerical and kindred workers.
Halaman 6 - Labor force. Persons are classified as in the labor force if they were employed as civilians, unemployed, or in the Armed Forces during the survey week. The "civilian labor force" is comprised of all civilians classified as employed or unemployed.
Halaman 7 - Persons employed at more than one job are counted only once in the census and are classified according to the job at which they worked the greatest number of hours during the reference week.

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