MATH 203 Lecture Notes - Bayes Estimator, Interquartile Range, Mutual Exclusivity

• School: McGill University
• Department: Mathematics & Statistics (Sci)
• Course: MATH 203
• Professor: Patrick Reynolds

Document Summary

Descriptive statistics utilizes numerical and graphical methods to look for patterns and data sets. Inferential statistics utilizes sample data to make estimates, decisions, predictions, or other generalizations about a larger set of data. Experimental unit: something about which we collect data. Variable: a characteristic property of an individual unit. Sample: a subset of the units of the population. Measure of reliability is a statement (usually quantitative) about the degree of uncer- tainty associated with a statistical inference. Four elements of descriptive statistical problems: population or sample of interest, one or more variables that are to be investigated, tables, graphs, or numerical summary tools, identification of patterns in the data. Quantitative data are measurements recorded on a numerical scale. Qualitative (or categorical) data are measurements that cannot be measured on a natural numerical scale; they can only be classified into groups of categories.