STAT211 Chapter Notes - Chapter 1-2: Confounding, Stratified Sampling, Wart
13 Jan 2016
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Document Summary
Study of statistics can be broadly classified into: descriptive statistics. Inferential statistics (inductive statistics) other judgements based on the data. Describe characteristics of data collected in a clear and understandable way. Proceed from data characteristics to make generalizations, estimation, forecasts, or any characteristic of an individual (does not have to be human) Explanatory variable (independent variable) an outcome of a study, variables of interest, what you get for your request. A measure in the study used to explain or influence the response variable; your request. Does not attempt to influence the subject compare existing groups/situations. Observe and measure variables, but does not impose any conditions. Imposes treatment or condition on subject, then study the changes caused by condition or treatment. A well designed experiment can give strong evidence of a cause-and-effect relationship (explanatory variable causes changes in the response variable) Not all research can be done in an experimental setting (time, money, ethical, other considerations)
