However, it may not apply during turbulent times. It must be used with caution. Variance, Infinite - Refers to a statistic which is not limiting or does not converge. Increases in sample sizes do not improve the quality of the statistic. The number exhibits non-converging fluctutations over time.
Additional tests are necessary to evaluate the behavior of variance and standard deviation.
Infinite variance is not as stable as finite variance. It should be noted that in both finite and infinite variance cases, a number is generated. The analyst does not see the traditional infinity symbol. However, the implications and applications can be significantly disparate. Vega - Is the measure of change in an option given a change in the volatility.