8.1 Checking data types

Number:

a <- 10
mode(a)

## [1] "numeric"

typeof(a)

## [1] "double"

str(a)

##  num 10

Text:

b <- "word"
mode(b)

## [1] "character"

typeof(b)

## [1] "character"

str(b)

##  chr "word"

HANDS-ON

1. Create the following objects:

o1 <- "R course"
o2 <- 10
o3 <- FALSE
o4 <- "9"

2. Check the data type of each object with mode.
3. Did you expect a different result? Why?