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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

Statistics and significance testing

In this chapter, the emphasis will be on the ‘analysis and interpretation’ aspects of statistics dealing mainly with simple descriptive measures calculated from survey data and the testing of hypotheses about those data. The more advanced...

Catalogue: Consumer Market Research Handbook
Author: Paul Harris
August 1, 1986

Research papers

Theory and application of multivariate methods (dependence)

In our data matrix we have one variable of particular interest and we wish to see how it is affected by movements in a single explanatory variable. For example, the variable we might be interested in is Sales in £mn and we may wish to know how it...

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

The current state of methodological developments in the multivariate analysis of surveys

The paper considers the current state of multivariate analysis when the data available only take the form of binary and classified variables. This restriction has meant that researchers have had to develop new techniques to deal with problems of...

Catalogue: Seminar 1982: Classifying Consumers
Author: Paul Harris
June 15, 1982

Research papers

Cluster analysis

Clustering normally operates on the rows of the data matrix. It seeks to find groupings or clusters of respondents who exhibit similar patterns in terms of the variables measured.

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

Theory and application of multivariate methods (interdependance)

Factor Analysis (like the similar technique of Principal Components Analysis) is a multivariate statistical method used primarily for data reduction. Itis usually employed to reduce the columns of our data matrix, that is the variables measured for...

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