mean(list)

Overview

The mean function calculates the arithmetic mean, commonly known as the average, of a given list of numbers. The function sums up all the elements in the list and divides it by the total number of elements to determine the mean value.

Parameters

Parameter Name	Type	Description	Required	Default Value
list	table	A list of numerical values for which the mean will be calculated. The list must contain at least one numerical value.	Yes	N/A

Returns

Type	Description	Possible Values
number	The mean (average) of the elements in the list. The return value will be a floating-point number if the mean is not an integer.	Any numerical value

Constraints

• The list parameter must be a table containing numerical values only.
• The table must have at least one element; otherwise, the function will return an undefined result due to division by zero.

Example Use

local myList = {1, 2, 3, 4, 5}
local result = StatBook.mean(myList)

print(result)  -- Output will be 3