Standard Deviation Shows how much variation exists from the average. Formula used is Pessimistic - Optimistic / 6Share this:Click to email this to a friend (Opens in new window)Click to share on Twitter (Opens in new window)MoreShare on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on LinkedIn (Opens in new window)Like this:Like Loading...