![]() ![]() The reliability of a measure is related to the size of the sample. Whenever a measure of reliability is computed it is understood that the sample is adequate and has been selected according to a rigorously scientific procedure.Īccording to large sample theory the reliability of a measure such as the arithmetic mean depends upon the number of cases in the sample and the variability of the values in the sample. Therefore it is important to know how closely the measures based on sample represent the parameters and how much variation one may expect if other samples are analysed.The measures of reliability are concerned only with fluctuations due to random sampling and they have nothing to do with observational and computational errors. ![]() It is the selection of relevant units of inquiry for the collection of data and should be done in a scientific manner. Sampling is an important aspect of social survey. Scientific Method in Sociological Research.Sociological Perspectives on Health and Illness.India's Development Report Card vis-a-vis MDG.HIV/AIDS and Mobility in South Asia- UNDP Report 2010.UN Summit on Non- UN Report on Domestic Violence.UN Summit on Non- Communicable Diseases.
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