Google Data Analytics Professional Certification Practice Test

What does an argument represent in an R function?

1. A type of variable stored in a database

2. The return value of the function

3. Information needed by the function to execute

4. A mathematical operation performed by the function

The correct answer is: Information needed by the function to execute

An argument in an R function represents the information needed by the function to execute properly. When you call a function in R, you typically provide arguments that specify what data or parameters the function should use in its calculations or operations. These arguments can be anything from numbers and vectors to data frames or specific settings that adjust the function's behavior. For example, if you have a function that calculates the mean of a set of numbers, the numbers you pass into that function as arguments are what the function uses to compute the mean. Without these arguments, the function would not have the necessary inputs to perform its intended operation. Thus, understanding how to correctly provide arguments to functions is crucial for effective programming and data analysis in R.