Wedding

Guest <- c("Jennifer", "David", "Jack", "Joanna", "Victoria")
Age <- c(19, 20, 21, 25, 23)
Friend_of <-c (1, 2, 1, 2, 2)


Wedding <- data.frame(Guest, Age, Friend_of)
Wedding

##      Guest Age Friend_of
## 1 Jennifer  19         1
## 2    David  20         2
## 3     Jack  21         1
## 4   Joanna  25         2
## 5 Victoria  23         2

typeof(Age)

## [1] "double"

typeof(Friend_of)

## [1] "double"

Wedding$Friend_of = c("Groom","Bride", "Groom", "Bride", "Bride")
Friend_of

## [1] 1 2 1 2 2

View(Wedding)

typeof(Friend_of)

## [1] "double"

The results I received in both # 3 and # 5 was “double”. It means the variable has a double value meaning, the 1’s and 2’s and the characters bride and groom.

str(Wedding)

## 'data.frame':    5 obs. of  3 variables:
##  $ Guest    : chr  "Jennifer" "David" "Jack" "Joanna" ...
##  $ Age      : num  19 20 21 25 23
##  $ Friend_of: chr  "Groom" "Bride" "Groom" "Bride" ...

This data table has 5 rows and 3 columns. There are 3 variables: Guest (charater), Age, (Numeric), Friend_of(character)