BUS 215 Lecture 1: Business 215 1-27-16
8 Dec 2016
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Document Summary
Contact through email give name, course and section number. Data are plural and should only be used as plural. Codes are not actual number, but represent the words of categorical data. Discrete can count, continuous- infinite amount of time between two intervals. Sample size necessary size depends on variability of quantity and desired precision of estimate. Bias = systematic tendency to under or overestimate. Is there a natural order to data: no nominal data, only counting is allowed, proportions allowed. If yes are scale distances meaningful (are they equidistant: no ordinal data, counting and ranking, still categorical, lickert scales choose answer based on label not numerical code so data gathered is categorical. If yes is there a meaningful zero: no interval data, 0 doesn"t mean absence of something, sums and differences, yes ratio data, can calculate ratios and any mathematical operation.
