R Commands

UC Business Analytics R Programming Guide https://uc-r.github.io/quickplots

Commands We “Should” know:

Read a .csv file

read.csv(“DataSet.csv”)

Print the first 6 lines of a data set

head(MyDataSet)

Number of rows in a data set

nrow(MyDataSet)

Create a Frequency table out of a list of categorical data

table(MyCategoricalDataSet)

Create a Relative Frequency table out of a list of categorical data

table(MyCategoricalData)/nrow(MyCategoricalData)

Turn lists of data into a chart

cbind(List1, List2, List3)

Minimum and maximum values in a data set

min(MyDataSet) max(MyDataSet)

Summary statistics for a data set

summary(MyDataSet)

Create data bins for numerical data then put the data into the bins

breaks <- seq(11, 25, by=2) cut(TheDataSet, breaks, right=FALSE)

Create a histogram.

hist(ColumnOfNumericalData, main=“TitleOfTheGraph”, xlab=“xAxisLabel”, border=“black”, xlim=c(11,25), las=1, breaks=7)

Cumulative Frequency Table

cumsum(NumericalDataSet)

Variance and Standard Deviation

var(DataSet) sd(DataSet)

Boxplots

boxplot(NumericalDataSet, xlab = “xAxisLabel”, ylab = “yAxisLabel”)

Side by side boxplots.

boxplot(NumericalDataSet1, NumericalDataSet2, xlab = “xAxisLabel”, ylab = “yAxisLabel”, names = c(“Name1”, “Name2”), main = “TitleOfTheGraph”)