STAT 201 Lecture 2: Looking At Data Relationship
29 Sep 2015
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Given a bivariate dataset of size n as follows: (x1, y1), (x2, y2), , (xn, yn). Want to study the relationship between x and y. __________________________________________________________. let x be the time spent on test preparation and let y be the test scores: the amount of time spent on test preparation relates to test scores. Amount of time spent on test preparation is the ____________________ variable, and test score is the ___________________ variable. A response variable measures an outcome of a study. An explanatory variable explains or causes changes in the response variables: the effects of alcohol: alcohol has many effects on the body. One effect is a drop in body temperature. To study this effect, researchers give several different amounts of alcohol to mice, then measure the change in each mouse"s body temperature in the 15 minutes after taking the alcohol.
