arguments in functions

= Average (number1, number2...)
= AverageAll(value1, value2...)

in the first function excel ask for numbers as arguments
in the second ask for values as arguments
what is the difference between number and values in this case? the arguments of second function are numbers too and why the sintax is not =AverageAll(number1, number2...)
I hope to be clear, my english is very very bad...

In which application do you use AverageAll ? It's not native to Excel

in Excel
sorry! name function is Averagea

Hi

Try google.

http://office.microsoft.com/en-gb/excel-help/averagea-HP005208995.aspx

Maybe I have not explained well. My question is not about the functions, there are just for example. I'm not clear about their actual arguments. Why Excel, for some functions ask to specify NUMBERS, and for other ask to specify VALUES, when all these functions use NUMERICAL VALUES. What does mean VALUE in these functions? That they can use not only numerical values, but other values like text and logical?
Anyway thank you for replyes.