MATH 10041 Study Guide - Final Guide: Interquartile Range, Standard Score, Unimodality

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Z-score (standard score) for distributions that are symmetric and unimodal. This converts an observation to standard units and allows us to compare observations, determining which is more unusual. x z x s. The farther away from 0 (either direction positive or negative, the more unusual the score is. ) You need to know and be able to apply the probability rules (mostly apply). For any event a, p(a does not occur) = 1 p(a does occur). Another way of writing this is as follows. ca is the complement of a: cp a. Rule 4a: only if a and b are mutually exclusive: Rule 5a: conditional probabilities (just be able to apply this from a two-way table. P b p a b (we didn"t use this one much. ) If a and b are independent events, then. P a p b p c p d any (finite) number of events.