Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. David Kindness is a Certified Public Accountant ...

Calculating the variance for a data set can differ based on whether the set is the entire population or a sample of the population. The formula for calculating the variance of an entire population ...

If values in a data set wildly fluctuate ... OpenOffice.org Calc offers four functions for calculating variance, depending on the source of the data and how you want to handle intermingled ...