Part 1: Read the data

# reading external data and storing into a dataframe called "cc.df"
cc.df <- read.csv("DefaultData.csv")

Part 2: Column names

# Display the column names
colnames(cc.df)

## [1] "default" "student" "balance" "income"

Part 3: Data Dimensions

# Display the Data Dimensions
dim(cc.df)

## [1] 10000     4

Part 4: Mean & Std dev

# Display mean of balance
mean(cc.df$balance)

## [1] 835.3749

# Display mean of income
mean(cc.df$income)

## [1] 33516.98

# Display std dev of balance
sd(cc.df$balance)

## [1] 483.715

# Display std dev of income
sd(cc.df$income)

## [1] 13336.64