--- /dev/null
+From https://canvas.harvard.edu/courses/5749 (STAT E-100, Fall 2015)
+
+ > options(warn=-1) # warnings from `library` are annoying
+ > options(device="png") # instead of Rplots.pdf
+ > out <- capture.output(suppressMessages(library("mosaic")))
+ > # conduct analyses of Titanic data
+ > # frequency table of counts with marginal totals
+ > tally(~Survived, format = "count", data = Titanic, margins = TRUE)
+
+ No Yes Total
+ 618 427 1045
+ > # bar graph of survival
+ > bargraph(~Survived, data = Titanic)
+
+<img src="titanic/Rplot001.png">
+
+ > # frequency table of propotions with marginal totals
+ > tally(~Survived, format = "proportion", data = Titanic, margins = TRUE)
+
+ No Yes Total
+ 0.59 0.41 1.00
+ > # frequency table of percentages with marginal totals
+ > tally(~Survived, format = "percent", data = Titanic, margins = TRUE)
+
+ No Yes Total
+ 59 41 100
+ > # pie chart of survival
+ > pie(tally(~Survived, format = "count", data = Titanic))
+
+<img src="titanic/Rplot002.png">
+
+ > # contingency table of counts
+ > tally(~Class + Survived, format = "count", margins=TRUE, data = Titanic)
+ Survived
+ Class No Yes Total
+ Lower 369 131 500
+ Middle 146 115 261
+ Upper 103 181 284
+ Total 618 427 1045
+ > # contingency table of proportions without conditioning
+ > tally(~Class + Survived, format = "proportion", margins=TRUE, data = Titanic)
+ Survived
+ Class No Yes Total
+ Lower 0.353 0.125 0.478
+ Middle 0.140 0.110 0.250
+ Upper 0.099 0.173 0.272
+ Total 0.591 0.409 1.000
+ > # contingency table of percentages without conditioning,
+ > tally(~Class + Survived, format = "percent", margins=TRUE, data = Titanic)
+ Survived
+ Class No Yes Total
+ Lower 35.3 12.5 47.8
+ Middle 14.0 11.0 25.0
+ Upper 9.9 17.3 27.2
+ Total 59.1 40.9 100.0
+ > # conditioning on survival
+ > # Of those who survived, what percentage were in the lower class? (31%)
+ > tally(~Class | Survived, format = "percent", data = Titanic, margins=TRUE)
+ Survived
+ Class No Yes
+ Lower 60 31
+ Middle 24 27
+ Upper 17 42
+ Total 100 100
+ > # conditioning on passenger class
+ > # Of those in the lower class, what percent survived? (26%)
+ > tally(~Survived | Class, format = "percent", data = Titanic, margins=TRUE)
+ Class
+ Survived Lower Middle Upper
+ No 74 56 36
+ Yes 26 44 64
+ Total 100 100 100
+ > # Dodged Bar Graph: Survival with Class Subgroups
+ > bargraph(~Survived, groups=Class, auto.key=TRUE, data=Titanic)
+
+<img src="titanic/Rplot003.png">
+
+ > # Dodged Bar Graph: Class with Survival Subgroups
+ > bargraph(~Class, groups=Survived, auto.key=TRUE, data=Titanic)
+
+<img src="titanic/Rplot004.png">
+
+ > # Stacked Bar Graph: Survival with Class Subgroups
+ > bargraph(~Survived, groups=Class, auto.key=TRUE, stack=TRUE, data=Titanic)
+
+<img src="titanic/Rplot005.png">
+
+ > # Stacked Bar Graph: Class with Survival Subgroups
+ > bargraph(~Class, groups=Survived, auto.key=TRUE, stack=TRUE, data=Titanic)
+
+<img src="titanic/Rplot006.png">
+
+ > # Unconditional Distribution of Survival and Conditional Distributions of Class
+ > mosaicplot(~Survived + Class, color=TRUE, data=Titanic)
+
+<img src="titanic/Rplot007.png">
+
+ > # Distributions of class conditional on survival
+ > tally(~Class | Survived, format = "percent", data = Titanic, margins=TRUE)
+ Survived
+ Class No Yes
+ Lower 60 31
+ Middle 24 27
+ Upper 17 42
+ Total 100 100
+ > # Unconditional Distribution of Class and Conditional Distributions of Survival
+ > mosaicplot(~Class + Survived, color=TRUE, data=Titanic)
+
+<img src="titanic/Rplot008.png">
+
+ > # Distributions of survival conditional on class
+ > tally(~Survived | Class, format = "percent", data = Titanic, margins=TRUE)
+ Class
+ Survived Lower Middle Upper
+ No 74 56 36
+ Yes 26 44 64
+ Total 100 100 100
--- /dev/null
+load("~/data/Titanic.RData")
+#View(Titanic) # used in RStudio
+options(digits=2) # enough precision
+options(echo=TRUE) # see commands run by Rscript
+options(warn=-1) # warnings from `library` are annoying
+options(device="png") # instead of Rplots.pdf
+out <- capture.output(suppressMessages(library("mosaic")))
+# conduct analyses of Titanic data
+# frequency table of counts with marginal totals
+tally(~Survived, format = "count", data = Titanic, margins = TRUE)
+# bar graph of survival
+bargraph(~Survived, data = Titanic)
+# frequency table of propotions with marginal totals
+tally(~Survived, format = "proportion", data = Titanic, margins = TRUE)
+# frequency table of percentages with marginal totals
+tally(~Survived, format = "percent", data = Titanic, margins = TRUE)
+# pie chart of survival
+pie(tally(~Survived, format = "count", data = Titanic))
+# contingency table of counts
+tally(~Class + Survived, format = "count", margins=TRUE, data = Titanic)
+# contingency table of proportions without conditioning
+tally(~Class + Survived, format = "proportion", margins=TRUE, data = Titanic)
+# contingency table of percentages without conditioning,
+tally(~Class + Survived, format = "percent", margins=TRUE, data = Titanic)
+# conditioning on survival
+# Of those who survived, what percentage were in the lower class? (31%)
+tally(~Class | Survived, format = "percent", data = Titanic, margins=TRUE)
+# conditioning on passenger class
+# Of those in the lower class, what percent survived? (26%)
+tally(~Survived | Class, format = "percent", data = Titanic, margins=TRUE)
+# Dodged Bar Graph: Survival with Class Subgroups
+bargraph(~Survived, groups=Class, auto.key=TRUE, data=Titanic)
+# Dodged Bar Graph: Class with Survival Subgroups
+bargraph(~Class, groups=Survived, auto.key=TRUE, data=Titanic)
+# Stacked Bar Graph: Survival with Class Subgroups
+bargraph(~Survived, groups=Class, auto.key=TRUE, stack=TRUE, data=Titanic)
+# Stacked Bar Graph: Class with Survival Subgroups
+bargraph(~Class, groups=Survived, auto.key=TRUE, stack=TRUE, data=Titanic)
+# Unconditional Distribution of Survival and Conditional Distributions of Class
+mosaicplot(~Survived + Class, color=TRUE, data=Titanic)
+# Distributions of class conditional on survival
+tally(~Class | Survived, format = "percent", data = Titanic, margins=TRUE)
+# Unconditional Distribution of Class and Conditional Distributions of Survival
+mosaicplot(~Class + Survived, color=TRUE, data=Titanic)
+# Distributions of survival conditional on class
+tally(~Survived | Class, format = "percent", data = Titanic, margins=TRUE)
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