MATH201 Study Guide - Quiz Guide: Quartile, Design Of Experiments, Unimodality
22 Jul 2016
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Descriptive statistics: numerical & graphical methods to look for patterns. Inferential statistics: methods that allow estimation of characteristic of a population. Variable: characteristic or property of a population unit. Census: collecting info from every member of population. Sample: portion of the population selected for analysis. 4 elements of descriptive statistical problems: population/sample of interest, 1+ variables to investigate, tables, graphs, numerical summary tools, conclusion about data based on patterns. 5 elements of inferential statistical problems: population of interest, 1+ variables to investigate, sample of population units, inference about population based on sample, measure of reliability for inference. Representative sample: characteristics typical of those possessed by population of interest. Simple random sample: sample selected in such a way that every member of population has equal chance of being selected. Measure of reliability: statement of degree of uncertainty. Ordinal scale: order is implied but differences between data values are meaningless or can"t be determined (ex.
