Chapter 4.4 - Math3200 Intermediate Probability and Statistics Prof Nan Lin Department of Mathematics Washington University Outlines Summarizing

# Chapter 4.4 - Math3200 Intermediate Probability and...

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Math3200 Intermediate Probability and Statistics Prof. Nan Lin Department of Mathematics Washington University

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Outlines Summarizing bivariate data two categorical variables Simpon’s paradox two numerical variables One categorical, one numerical
SUMMARIZING BIVARIATE CATEGORICAL DATA

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Two-way contingency table Are different levels in a people's human security contingent on the level--degree--of their freedom?
A Wall Street interview question In Baseball, the batting average is the number of hits over the number of at bats. Player A has a greater batting average than Player B in the first half of the season and the second half of the season. Is it possible that Player B would have a higher batting average for the entire season?

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Derek Jeter 12/48 0.250 183/582 0.314 190/654 0.291 385/1284 0.300 David Justice 104/411 0.253 45/140 0.321 163/495 0.329 312/1046 0.298 1995 1996 1997 Combined
A fictitious example From Blyth, Colin R. (1972). On Simpson's paradox and the sure-thing principle. JASA

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