What is the variance of {-5, 19, -20, 5, 16, -7, 1}?
1 Answer
Population Variance:
Sample Variance:
Explanation:
Variance is calculated based on
the sum of
If the data values represent the entire population
then we calculate the population variance
If the data values represent a sample from a larger population
then we calculate the sample variance
We would normally use a spreadsheet or calculator to do this.
Using builtin functions:
Or step-by-step: