STAT-2126EL Lecture 17: Intro to Statistics - Lecture 17
14 Dec 2018
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Document Summary
We measure the strength of the relationship between two or more variables. We can determine the degree of correlation and the direction of this correlation. Any consistent relationship can be used to predict future events. Can support but not prove a theory. There may be no understanding as to why the relationship exists. Cannot show a casual relationship between the two variables. Prediction using a previously established correlation linear regression analysis: linear regression analysis: important not to beyond range of data that we have. Validity does a new measurement correlate to an established measure. Reliability multiple measures should have high correlation. Theory verification to test a prediction about the relationship between two variables. Direction of the relationship: positive, negative.
