Variation
Variation
Example 2
Find the variance and standard deviation of the following set of values:
Step 1. Find the mean of the data.
Step 2. Find the difference between each data point and the mean.
![variance_ex2-3 variance_ex2-3](https://claregladwinresd.glk12.org/pluginfile.php/994/mod_book/chapter/525/Univariate/images/variance_ex2-3.png)
Step 3. Square each value from Step 2.
![variance_ex2-5 variance_ex2-5](https://claregladwinresd.glk12.org/pluginfile.php/994/mod_book/chapter/525/Univariate/images/variance_ex2-5.png)
Step 4. Find the mean of the values from Step 3.
Variance = 4