Function formulas

What is a Function Formula?  A shortcut way to write an equation that performs a calculation in Excel

The parts of a function formula are:
 
= (Equal Sign)
 
SUM - (Function Name)
 
(C1:D19) - (Argument)
 
It looks like this:
 
=SUM(C1:D19)
 
There are many function formulas and they are categorized by their use. Some categories include:
 
Statistical, Math and Trig, Financial, Date/Time, Engineering, and Text.
 

 Function Projects:

Project One: Using the Directions below, modify the Course Grades Spreadsheet