R Programming language - R mean, median and mode

In R, the mean(), median(), and mode() functions are used to calculate the statistical measures of central tendency.

The mean() function returns the average value of a vector or set of values, while the median() function returns the middle value in a vector or set of values. The mode() function returns the most frequently occurring value in a vector or set of values.

Here are some examples of how to use these functions in R:

# Create a vector of numbers
x <- c(5, 2, 8, 4, 1)

# Calculate the mean of the vector
mean(x)
# Output: 4

# Calculate the median of the vector
median(x)
# Output: 4

# Calculate the mode of the vector
library(modeest)
mfv(x)
# Output: 5

# Create another vector of numbers
y <- c(5, 2, 8, 4, 1, 4)

# Calculate the mean of the vector
mean(y)
# Output: 4

# Calculate the median of the vector
median(y)
# Output: 4

# Calculate the mode of the vector
mfv(y)
# Output: 4

Note that the modeest library is required to use the mode() function in R.

In addition to vectors and sets of numbers, you can also use these functions on other R data structures such as matrices, data frames, and lists. In these cases, you can specify which column or element to find the mean, median, or mode of.