Standard deviation and variance are two basic mathematical concepts that have an important place in various parts of the financial sector, from accounting to economics to investing. Both measure the ...

Financial word of the day: Heteroscedasticity describes a situation where risk (variance) changes with the level of a variable. In financial models, this means volatility is not constant. Most pricing ...

When a project is running exactly as predicted, there is no time variance to worry about. When events are happening ahead of schedule or behind schedule, you have a variance, which could pose ...