Health Sciences 2801A/B Lecture Notes - Lecture 3: Scatter Plot

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2801A/B
• Professor: Christopher Lee

Document Summary

Fitti(cid:374)g a straight li(cid:374)e to a s(cid:272)atterplot : y"=a +(cid:271)(cid:454) = straight li(cid:374)e (cid:894)(cid:455)=(cid:373)(cid:454)+(cid:271)(cid:895, y=dependant variable, x=independent variable, a = constant, b=slope. The issue of goodness of fit is concerned with how well the regression line fits the data. Continuous vs categorical variables: a continuous variable involves different amounts of something. In comparison, a categorical variable involves different kinds of something: e. x. Scores on a vocabulary test (continuous: bp readings (continuous, type of bp monitor your using (arm-cuff, or wrist cuff) categorical, t(cid:455)pe of tea (cid:894)gree(cid:374) tea, (cid:271)la(cid:272)k tea (cid:895) categorical.