Hypotheses for factor analysis, Other Subject

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Confirmatory factor analysis (model testing in structural equation modeling):

Variables (usually at least 5) are observable indicators of one or more underlying factors that are identified in a theory or model. Structural equation models investigate the plausibility of theoretical models that might explain (summarize) the interrelations among a set of variables.

Hypothesis: The specified theoretical measurement model or the confirmatory factor analysis model better represents (fits) the observed data than do other measurement or confirmatory factor analysis models.

Example: In the field of nutrition, variables indicating the amount of consumption of fruits and vegetables will be intercorrelated, as will variables indicating the amount of consumption of beef, pork, and chicken. A theoretical model that specifies that there are two factors [(1) fruits/vegetables, and (2) meats)] may adequately summarize the interrelationships among the variables.


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