What are R relational operators?

a) Operators that compare values and return TRUE or FALSE

b) Operators that perform arithmetic operations

c) Operators that assign values to variables

d) Operators that manipulate strings

Answer:

a) Operators that compare values and return TRUE or FALSE

Explanation:

R relational operators are used to compare two values and return a logical value (TRUE or FALSE). These operators include:

Equal to (==): Checks if two values are equal.
Not equal to (!=): Checks if two values are not equal.
Greater than (>): Checks if the first value is greater than the second.
Less than (<): Checks if the first value is less than the second.
Greater than or equal to (>=): Checks if the first value is greater than or equal to the second.
Less than or equal to (<=): Checks if the first value is less than or equal to the second.

# Examples of R relational operators
x <- 10
y <- 5

print(x == y)  # Output: FALSE
print(x != y)  # Output: TRUE
print(x > y)   # Output: TRUE
print(x < y)   # Output: FALSE
print(x >= y)  # Output: TRUE
print(x <= y)  # Output: FALSE

In this example, relational operators are used to compare the values of x and y. The results are logical values indicating the outcome of the comparisons.

Relational operators are essential in control structures like if statements and loops, where conditions need to be evaluated to determine the flow of the program.