COSTFREELEVELS4FIRST TRADE10 MINCARDNONEACCOUNTOPTIONALNOT TRACKING
STANDARD DEVIATION
How far, typically, things sit from average. A class where everyone scores near 70 has a small one. A class split between 20s and 100s has a big one.
A measure of how spread out a set of numbers is around their mean.
LEARN THIS PROPERLY
This word comes from the Bidness Academy, a free trading program you can start at zero.