Health Sciences 3801A/B Lecture Notes - Lecture 3: Spreadsheet, Reference Group
1 Jun 2016
School
Department
Course
Professor
Document Summary
2 groups 1 drinking gt, other drinking bt. Continuous v. categorical variables: a continuous variable involves differences in amt. , such as differences in. Bp (up until now: a categorical variable involves differences in classification, such as kinds of tea labeled as either bt or gt (2 classifications) Dummy coding is a method of representing 2 categories using the values 1 and 0. Chart : bp readings (continuous full range of values, types of tea (categorical 0 or 1) Bt: **can centre" scores (gt = -0. 5, bt = 0. 5, ssp table . A) calculate the regression line for predicting bp (y) on the basis of type of tea (x) o o. B) calculate predicted bp of a person who drank gt? o. C) calculate predicted bp of a person who drank bt? o. Slope (bt = on, gt = off: chart . Gt y"= 121 + 6(0) = 121 = mean (gt)
