Variables and Data Types in R

Variables are used to store data in R. You can assign values using the <- operator or =. R supports several basic data types:

• Numeric – numbers like 42 or 3.14
• Character – text like "Hello"
• Logical – TRUE or FALSE
• Integer – whole numbers with L suffix, e.g., 10L
• Factor – categorical data for grouping

You can check the type of a variable using the class() function.

num <- 42
char <- "Hello"
logi <- TRUE
int <- 10L
fac <- factor(c("Red", "Green", "Blue"))

class(num)
class(char)
class(logi)
class(int)
class(fac)

‍‍Output:

[1] "numeric"
[1] "character"
[1] "logical"
[1] "integer"
[1] "factor"

You can also create multiple variables and use them in calculations or string operations:

first_name <- "Joe"
last_name <- "Slug"
full_name <- paste(first_name, last_name)

age <- 25
next_year_age <- age + 1

print(full_name)
print(next_year_age)