Statistical Sciences 2037A/B Study Guide - Midterm Guide: Dependent And Independent Variables, Random Assignment, Block Design
25 Nov 2016
School
Department
Professor
Document Summary
Variables: explanatory (independent): have an in uence or effect on the response variable, response: main outcome studied, treatment: one/combo of categories of an explanatory variable assigned by the researcher. Types of studies: observational: differences in explanatory variable(s) are observed" and recorded in relation to differences in the response variable. No manipulation by researcher, more likely to measure participants in their natural setting. Issues: can claim association but not causation, potential for confounding. Confounding variables: variables other than the explanatory variable and affect the response. Differences among groups are created by the researcher. Principles of experimental design to have a cause and effect relationship. Blinding: subject/researcher doesn"t know the nature of their treatment: use coded data, placebos, can"t always do this. Ethics study of standards of right and wrong: that part of science and philosophy dealing with moral conduct, duty, judgment .
