All terms in this list:

Active Cell: The active window is the area on the Desktop that is currently being used and which usually contains a file or an application.

Average: Provides the average of the range of references in the argument.

Formula: A formula is an expression entered in a cell that performs numeric calculation, logical comparison, or text string manipulation.

Formula Bar: The formula bar is located under the toolbars at the top of the working screen. It contains the edit line for working with formulas, and provides information regarding cell addresses.

Sum: Adds the values in the function argument or the values in the cell references in the argument.

Operators: Operators are used to tell Excel what mathematical functions to perform in a formula. The following symbols are the operators which are used most often in Excel formulas: Addition (+) Subtraction (-) Multiplication (*) and Division (/).