STAT202 Study Guide - Final Guide: Interquartile Range, Empty Set, Mutual Exclusivity
20 Oct 2016
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Document Summary
Statistics is used to analyze the results of surveys and as a tool in research to make conclusions. Is the science of conducting studies to collect, organize, summarize, analyze, and draw conclusions from data. Variable: describes an event; either qualitative or quantitative. Qualitative variables: can be placed into distinct categories according to some characteristic: ex. If students are sorted by their academic level (university, college, Quantitative variables: numerical, can be used in mathematical calculations: can be further classified by the type of number they are, ex. If the students are sorted by mark , the variable mark is quantitative. Discrete variables: obtained by counting: ex. Continuous variables: obtained by measuring: ex. Height; can increase precision from 173 cm to 173. 3 cm to 173. 32 cm. Variables can also be classified based on how they are categorized, counted, or measured. Nominal measurement: classifies data into non-overlapping categories with no order and no ranking: ex.
