Which of the following inbuilt functions in R is used to calculate the mean of a numeric vector?

Correct option is A

In R, the mean() function is used to calculate the arithmetic mean of a numeric vector. It takes a numeric vector as input and returns the mean value, which is the sum of the elements divided by the total number of elements.
Example:

Important Key Points:
1. The mean() function is an inbuilt function in R used to calculate the average value of a vector.
2. It handles NA values by using the argument na.rm = TRUE. Example:

3. It is a part of R’s core statistical functions and does not require additional libraries.
Knowledge Booster:
· avg(): This is not a valid function in R for calculating the mean.
· median(): This calculates the median (middle value) of a vector, not the mean. Example: median(c(10, 20, 30)) gives 20.
· summarize(): This is used in the dplyr package for creating summaries of data, but not specifically for calculating the mean.
· aggregate(): Used for summarizing data by groups, typically in data frames or lists, but requires explicit specification of operations like mean.