The Social Welfare Forum: Official Proceedings [of The] Annual Meeting, Parte1 |
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Página 163
-Thus , in sampling case records only those folders which are relatively thin may be selected so as to avoid reading volumes of case material to extract certain information . 5. Failure to check back on the nonrespondents .
-Thus , in sampling case records only those folders which are relatively thin may be selected so as to avoid reading volumes of case material to extract certain information . 5. Failure to check back on the nonrespondents .
Página 164
In one modification of random sampling procedure , the population is subdivided into groups before selection of the ... If a uniform sampling fraction is used , the same proportion of units from each of the strata is selected randomly .
In one modification of random sampling procedure , the population is subdivided into groups before selection of the ... If a uniform sampling fraction is used , the same proportion of units from each of the strata is selected randomly .
Página 165
Random samples may then be selected from each strata . For large sample studies a variable sampling fraction can be used which will further increase the accuracy of the population estimates if the strata variances vary greatly .
Random samples may then be selected from each strata . For large sample studies a variable sampling fraction can be used which will further increase the accuracy of the population estimates if the strata variances vary greatly .
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Contenido
THE AMERICAN PEOPLE IN THE WORLD CRISIS | 1 |
THE COMMON CORE OF SOCIAL WORK IN DIFFERENT COUN | 19 |
THE HUMAN ASPECTS OF MOBILIZATION | 37 |
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