First of all, let us explain what the term "slot volatility" actually means:
Slot volatility, A.K.A "slot variance" refers to the amount of risk and reward associated with a specific slot game.In a nutshell, all jargon removed, volatility tells you how often you can expect to win and how big those amounts will be.
Players often base their choice on which slot to play, off slot volatility that suits their playing style, mood at the time, and bankroll.
A medium volatility slot is a slot that has a good balance between win frequency and the size of the wins. These slots are recommended for customers who enjoy some thrills but don't want to risk too much. Medium volatility slots generally offer moderate sized wins with occasional bigger wins as well.