# SUM Function

Returns the sum of the nonmissing arguments.

 Category: Descriptive Statistics

## Syntax

SUM(argument,argument,... )

### Required Argument

#### argument

specifies a numeric constant, variable, or expression. If all the arguments have missing values, then one of the following occurs:

• If you use only one argument, then the value of that argument is returned.
• If you use two or more arguments, then a standard missing value (.) is returned.
Otherwise, the result is the sum of the nonmissing values. The argument list can consist of a variable list, which is preceded by OF.

## Example

The following SAS statements produce these results.
SAS Statement
Result
`x1=sum(4,9,3,8);`
`24`
`x2=sum(4,9,3,8,.);`
`24`
```x1=9;
x2=39;
x3=sum(of x1-x2);```
`48`
```x1=5; x2=6; x3=4; x4=9;
y1=34; y2=12; y3=74; y4=39;
result=sum(of x1-x4, of y1-y5);```
`183`
```x1=55;
x2=35;
x3=6;
x4=sum(of x1-x3, 5);```
`101`
```x1=7;
x2=7;
x5=sum(x1-x2);```
`0`
```y1=20;
y2=30;
x6=sum(of y:);```
`50`