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Descriptive statistics: two-way tables
xtabs
addmargins
colPercents
, rowPercents
Plotting two categorical variables
Ex: Titanic
data
Plotting two quantitative variables
Univariate displays separately
Association:
Ex: Puromycin
data
Ex: attenu
data
Ex: faithful
data
Ex: iris
data
Sample Pearson product-moment correlation coefficient (r)
Properties of r
Ex: iris
data
Ex: attenu
data
More about r
Comparison of groups
Ex: weight ~ feed, data = chickwts
Ex: ~ age | education, data = infert
Ex: ~ count | spray, data = InsectSprays
Multi-way contingency tables
Mosaic plots, dot charts
Sample variance-covariance matrices
Scatterplot matrices (SPLOM)
Comparing groups: coplots
Ex: LifeCycleSavings
data
Ex: Titanic
data
Random experiment
Sample space
Subsets, events, empty set
Operations:
Algebra of sets
Examples: events in plain English, write set notation
Mutually exclusive, disjoint
Date: 2010-10-08 15:17:33 EDT
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