This lesson will explain how to calculate simple statistics such as Mean and Standard Deviation.

__Example__

The codes below compute the mean and standard deviation for each student.

**DATA** MEAN_AND_SD;

**Set** Results;

Mean = Mean(ENG, MATH, SCIENCE);

STD = STD (ENG, MATH, SCIENCE);

**RUN;**

**DONE! You have learned to compute mean and standard deviation in SAS.**

Note:

- Some other common SAS computing functions are:

- Min (variables, ...): returns minimum result

- Max (variables, ...): returns maximum result

- N (variables, ...): returns number of non-missing result

- NMiss (variables, ...): returns number of missing result

- STDERR (variables, ...): returns standard error

- Var (variables, ...): returns variance - Mean and Standard Deviation can also be done using
**PROC MEANS**or**PROC UNIVARIATE**. These two procedures will be explained in later lessons.