AVERAGE:
Returns the average of its arguments
The AVERAGE function returns the average (arithmetic mean) of the arguments.
AVERAGE takes
1 required argument and
255 optional arguments:
Syntax: AVERAGE(number1,
[number2], ...
)
Using the AVERAGE function:
The arguments for the AVERAGE function are:
Argument

Required?

Description

number1 
Required 
The first number, cell reference, or range for which you want the average. 
number2, ... 
Optional 
Additional numbers, cell references or ranges for which you want the average, up to a maximum of 255. 
• Arguments can either be numbers or names, ranges, or cell references that contain numbers. 
• Logical values and text representations of numbers that you type directly into the list of arguments are counted. 
• If a range or cell reference argument contains text, logical values, or empty cells, those values are ignored; however, cells with the value zero are included. 
• Arguments that are error values or text that cannot be translated into numbers cause errors. 
• If you want to include logical values and text representations of numbers in a reference as part of the calculation, use the AVERAGEA function. 
• If you want to calculate the average of only the values that meet certain criteria, use the AVERAGEIF function or the AVERAGEIFS function. 
The AVERAGE function returns the average (arithmetic mean) of the arguments.