PSYC 201W Chapter 5: Research methods - Chapter 5 Summary.pdf
8 Apr 2014
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Correlation exists between x and y when the score/values of x are systematically associated with that of y in a non-random fashion. Involves examining potential associations between naturally occurring variables by measuring those variables and determining whether they are statistically related. Correlational study of two variables, x and y. Statistically analyze/examines whether or not there is an association. Attempts to minimize potential confounding factors through statistical control and special research designs. Higher scores/levels of one variable tend to be associated with higher scores or levels of another variable. As x increases, y tends to increase as well vice versa. Higher scores/levels of one variable tend to be associated with lower score/levels of another variable. Scores on x and y tend to move in opposite directions. A graph in which data points portray the intersection of x and y values. Correlation can be graphed using a scatter plot. Used for applied prediction and in test validation.
