PSYB30H3 Lecture Notes - Lecture 2: 16Pf Questionnaire, Test Anxiety, Factor Analysis
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Factor analysis summarizes how large # of variables are related. Many different measures are administrated to many respondents. Some scores will be positively correlated with one another; others negatively correlated. These correlations might reflect the influence of a more basic, underlying factor on exam. Some stats basics! index cards and grade on exam. If you plot these stats against each other you will see a correlation between. Example the number of the (cid:884) variables so positive correlation between # of index cards and grade. There can be positive and negative correlations strength of correlation is. Factors that may contribute to grade/ correlated with grades : highest grade completed by parents may not be causal but may not between (-1. 00 to 1. 00) be completely causal. Factor analysis attempts to reduce number of variables to limited number of (cid:498)factors(cid:499) You can go in and do the same experiment cattell did but come up with different words to describe these traits.
