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This chapter is from the book

This chapter is from the book

Performing Calculations Using Functions

Functions are predesigned formulas that save you the time and trouble of creating commonly used or complex equations. Excel includes hundreds of functions that you can use alone or in combination with other formulas or functions. Functions perform a variety of calculations, from adding, averaging, and counting to more complicated tasks, such as calculating the monthly payment amount of a loan. You can enter a function manually if you know its name and all the required arguments, or you can easily insert a function using AutoComplete, which helps you select a function and enter arguments with the correct format.

Enter a Function

  • yellow-01.jpg Click the cell where you want to enter the function.
  • yellow-02.jpg Type = (an equal sign), type the name of the function, and then type ( (an opening parenthesis).

    As you type, you can scroll down the Formula AutoComplete list, select the function you want, and then press Tab.

  • yellow-03.jpg Type the argument or select the cell or range you want to insert in the function, and then type ) (a closed parenthesis) to complete the function.
  • yellow-04.jpg Click the Enter button on the formula bar, or press Enter.

Excel will automatically add the closing parenthesis to complete the function.

Commonly Used Excel Functions

Function

Description

Sample

SUM

Displays the sum of the argument

=SUM(argument)

AVERAGE

Displays the average value in the argument

=AVERAGE(argument)

COUNT

Calculates the number of values in the argument

=COUNT(argument)

PMT

Determines the monthly payment of a loan

=PMT(argument)

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