The original article used variance and volatility almost interchangeably. This revision distinguishes the formal statistical term from the looser labels often found in game descriptions.
Variance has a mathematical meaning
Variance measures the spread of outcomes around a mean using squared deviations. A game description calling itself high volatility may not be publishing that precise calculation. The label can summarize a payout pattern without telling a reader every probability or the measurement method behind it.
A label does not forecast a session
Descriptions such as frequent smaller prizes or rarer larger prizes concern the design's distribution. They do not tell an individual player when a result will arrive. A short session can look very different from an average taken over many plays.
Return and spread answer different questions
An average return and the variability around it are separate characteristics. Neither is a promise that a particular balance will be preserved. This archive entry supplies no ranked slot list and withdraws the earlier implication that a volatility label makes it possible to choose a reliably winning title.
