PSY201H1 Chapter Notes - Chapter 6: Likert Scale, Level Of Measurement, Squared Deviations From The Mean
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Correlation coefficient expresses the degree and direction of the relationship. The same value of x always leads to the same value of y. The same value of y always leads to the same value of x. The direction of the relationship refers to whether the relationship is positive or negative. The degree of the relationship refers to the strength of the relationship. The direction and degree of the correlation coefficient must be independent of the differences in units and scaling that exist between two variables. The same value of x doesn"t always lead to the same value of y. On average, y changes systematically with x. Predicting y with better with the knowledge of x than without it. The knowledge of x does not aid in predicting y. Pearson r is a measure of the extent to which paired scores occupy the same or opposite positions within each of their distributions.
