PSYCH339 Lecture Notes - Lecture 9: Scatter Plot, Job Performance, Effect Size
10 Aug 2016
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The more candidates you have, the more selective you can be (lower selection radio, the higher the utility) Gma (general mental ability) but we have to make an inference. Construct validity gma is assumed to cause you to get an item right or wrong: gma item 1, item 2, item 3, item 4. Validity: gma test, performance rating. Correlation between a test and a correlation between outcome, ratings: and then create a scatter plot and find the correlation. Variance in gma and variance in job performance. How good of a predictor is job performance how much does the predictor overlap (shared) R (which is correlation) r^2 is the proportion of variables that is shared. R^2 is also called: the coefficient determination, proportion of variance accounted for, effect size, strength of a predictor. Job knowledge, variance in job performance and variance in gma can all overlap.
