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Research papers

Random VS quota sampling methods

In survey research it is very rare for all respondents in a given population to be interviewed. We usually take a sample of that population. The reason why we can do this is because a sample can give us, not necessarily the accuracy of a census (or...

Catalogue: ESOMAR Teach-In Seminar 1995: All You Ever Wanted To Know About Sampling, Statistics And Questionnaires
Author: Paul Harris
February 14, 1995

Research papers

How to determine the size of a sample

How should I decide on the sample size for a survey? That is a question often posed by survey researchers to statisticians. It is difficult to answer simply as in market research we carry out surveys which more often than not carry a large number of...

Catalogue: ESOMAR Teach-In Seminar 1995: All You Ever Wanted To Know About Sampling, Statistics And Questionnaires
Author: Paul Harris
February 14, 1995

Research papers

Typology at random

Typal analysis is a powerful tool for determining a structure within a large body of data . By studying and comparing the results of two series of experiments (random typology and typology of random numbers) we have been able to define two...

Catalogue: Seminar 1972: Segmentation And Typology
Authors: Henri Bergonier, Bernard Morin
June 15, 1972