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Correlation And Regression, Donal O'Brien, Pamela Sharkey Scott
Correlation And Regression, Donal O'Brien, Pamela Sharkey Scott
Books/Book Chapters
A correlation is a measure of the linear relationship between two variables. It is used when a
researcher wishes to describe the strength and direction of the relationship between two
normally continuous variables. The statistic obtained is Pearson’s product-moment
correlation (r), and SPSS also provides the statistical significance of r. In addition, if the
researcher needs to explore the relationship between two variables while statistically
controlling for a third variable, partial correlation can be used. This is useful when it is
suspected that the relationship between two variables may be influenced, or confounded, byA correlation is a measure of the …
Exploratory Factor Analysis, Daire Hooper
Exploratory Factor Analysis, Daire Hooper
Books/Book Chapters
Factor analysis examines the inter-correlations that exist between a large number of items (questionnaire responses) and in doing so reduces the items into smaller groups, known as factors. These factors contain correlated variables and are typically quite similar in terms of content or meaning. Unlike other methods discussed in this book, exploratory factor analysis (EFA) does not discriminate between variables on whether they are independent or dependent, but rather it is an interdependence technique that does not specify formal hypotheses. It is in this sense it is ‘exploratory’ in nature as it allows the researcher to determine the underlying dimensions …