STAT 205 Lecture Notes - Lecture 2: Venn Diagram, Krypto, Sample Space
6 May 2020
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1st see if a tree or venn can be used. Use for process or steps (# outcomes)# trials. Use for simultaneous events or to see a relationship. #1 + #2 / total (#1 + #2 / total)(100) If odd #, take mean of 2 middle numbers. For any k>1, at least (1 1/k2) measurements will fall within k standard deviations. How to find alpha value for ci on t table. More centralized, but only applies to mound shaped and symmetric data distributions. 95% of data will fall within 2 sd. 99. 7% of data will fall within 3 sd: minimum, lower quartile (25th percentile, median/middle quartile, upper quartile (75th percentile, maximum. Any observation that is large/small relative to the other data. Incorrectly recorded: from a different population, represents a rare event. To get bigger, 1 p(smaller) p (#2 p(#1) If we were to take many samples, 95% of the intervals would enclose mu: 95% of the mean values will lie.
