PSY-PC 2110 Study Guide - Quiz Guide: Stratified Sampling, Multistage Sampling, Partially Ordered Set
4 Feb 2020
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Steven"s measurement levels (s. s. stevens: ratio--has absolute/true zero, equal intervals, magnitude/order, and identity (supports multiplication) Interval--has equal intervals, magnitude/order, and identity (supports addition: ordinal--has magnitude/order and identity (supports monotonic transformations, nominal--has identity, more complex taxonomy, missing, binary, nominal, partial order data, complete order data, ratio, absolute. [accuracy: distribution--a distribution of a variable tells us what values a variable takes and how often it takes them. Frequency distribution: characteristics of distributions (4 different types), central tendency (mean, median, mode, mean--balance point/center of mass. Sum of squares of the scores is minimized by the mean (least squares principle of the mean: median--middle score in a distribution. Sum of absolute values of scores is minimized by the median: mode--most common score (good for nominal data, variability (spread, kurtosis (peaks of distribution)
