### Introduction

By the finish of this lesson, you must be maybe to:Understand the meaning of a functionUse Excel XP functions in calculationsAccess Excel XP functionsFind the amount of a selection of data

### Using functions

A function is a predefined formula the helps perform common mathematical functions. Attributes save you the time of writing lengthy formulas. You could use an Excel role called Average, because that example, to quickly uncover the typical of variety of numbers. Or you can use the Sum function to uncover the amount of a cabinet range. Excel XP consists of many different functions.

You are watching: Enter a formula in cell b7 to calculate the average value of cells b2:b6.

Each duty has a specific order, referred to as syntax, which have to be strictly followed for the role to work correctly.

Here is the syntax order:

All functions start with the equates to (=) sign.After the equals sign, define the function name (e.g., Sum).Add one or more arguments—numbers, text, or cabinet references—enclosed by parentheses. If over there is an ext than one argument, different each by a comma.

Here's an example of a function with one dispute that adds a range of cell (B3 through B10):

Here's an instance of a duty with more 보다 one argument the calculates the mean of numbers in a variety of cell (B3 with B10 and also C3 with C10):

Excel has hundreds of functions to help with your calculations. Structure formulas can be difficult and time consuming. Excel's features can conserve you a many time and headaches.

### Excel's various functions

There are plenty of different attributes in Excel XP. Few of the an ext common attributes include:

Statistical functions:SUM: This to add a range of cells.AVERAGE: This calculates the median of a range of cells.COUNT: This counts the variety of chosen data in a range of cells.MAX: This identifies the biggest number in a selection of cells.MIN: This identifies the smallest number in a range of cells.Financial functions:Interest ratesLoan paymentsDepreciation amountsDate and time functions:DATE: This converts a serial number come a work of the month.Day that Week: This populates cells with the days of the week.DAYS360: This calculates the number of days in between two dates based on a 360-day year.TIME: This return the serial number of a certain time.HOUR: This counter a serial number come an hour.MINUTE: This switch a serial number to a minute.TODAY: This return the serial number of today's date.MONTH: This converts a serial number to a month.YEAR: This converts a serial number come a year.

You don't have to memorize the functions however should have an idea the what each deserve to do because that you.

### Finding the sum of a selection of data

The AutoSum function permits you to produce a formula that contains a cabinet range—many cells in a column, because that example, or plenty of cells in a row.

To calculate the AutoSum that a variety of data:Type the number to be had in the formula in separate cells of obelisk B (type 128 in cabinet B2, 345 in cell B3, 243 in cell B4, 97 in cell B5, and also 187 in cell B6).Click the first cell (B2) to be consisted of in the formula.Using the point-click-drag method, traction the mouse to define a cell selection from cabinet B2 with cell B6.On the Standard toolbar, click the Sum button.The amount of the numbers is added to cabinet B7, or the cell immediately beneath the defined selection of numbers.Notice that the formula, =SUM(B2:B6), has been identified to cabinet B7.

Excel will not always tell you if your role contains one error, for this reason it's as much as you come check all of your functions. To learn exactly how to execute this, review the Double-Check her Formulas great from ours Excel recipe tutorial.

### Finding the typical of a variety of numbers

The Average function calculates the median of a range of numbers. The Average role can it is in selected native the AutoSum drop-down menu.

To calculate the median of a selection of data:Type the number to be included in the formula in different cells of pillar B (type 128 in cabinet B2, 345 in cell B3, 243 in cabinet B4, 97 in cell B5, and also 187 in cell B6).Click the first cell (B2) to be had in the formula.Using the point-click-drag method, drag the mouse to define a cell selection from cabinet B2 with cell B6.On the Standard toolbar, click the drop-down part of the AutoSum button.
Select the Average function from the drop-down features list.
The median of the number is included to cell B7, or the cell immediately beneath the defined variety of numbers.Notice that the formula, =AVERAGE(B2:B6), has actually been defined to cell B7.

### Accessing Excel XP functions

To accessibility other functions in Excel:Using the point-click-drag method, choose a cell range to be had in the formula.On the Standard toolbar, click the drop-down component of the AutoSum button.If you don't see the function you desire to use, display additional functions by picking More Functions.
The Paste Function dialog crate opens.There room three ways to situate a role in the Insert Function dialog box:

You can type a question in the Search because that a duty box and click GO, scroll with the alphabetical list of functions in the Select a function field, or pick a duty category in the Select a category drop-down list and also review the corresponding role names in the Select a function field.

Select the function you want to use, then click OK.

If you're comfortable with basic functions, you may want to try a more advanced one favor VLOOKUP. Girlfriend can examine out our short article on how to use Excel's VLOOKUP function for more information. If you want to discover even more about functions, examine out ours Excel formulas tutorial.

### Challenge!

Type the complying with information:In cell A1, type 7842.

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In cell A2, type 5681. In cabinet A3, kind 3947. In cell B1, form 2594. In cabinet B2, form 9024. In cabinet B3, type 6505.Create a formula in cabinet A4 that uses the AutoSum function to add the worths in cell A1, cell A2, and also cell A3.Create a formula in cell B4 that offers the Average function to uncover the averages of values in cell B1, cell B2, and also cell B3.
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