Roulette, like any game of chance, is based on independent series of events referred to mathematically as independent trial processes. This means that every spin of the wheel is a unique event. Previous spins have no influence on the result and this spin has no impact on the result of future spins. Due to this, statistical methods for predicting outcomes are not possible.
Strategies for Winning at Roulette
There are, however, a few strategies you can employ to maximize your chances of winning and to help you play longer and enjoy the game more. One strategy many people use is to win big in the short term. This is done because in an independent trial series of events such as Roulette, the longer you play the worse the odds are against you. You have better chances of winning in the short term. You should then bet big on fewer spins.
Another good strategy is to place wagers that diminish the house's advantage. These are the so called even money bets because the odds are almost 50/50. Choose either lows, highs, odds, or evens as the likelihood of one or the other coming up are close to half. Red or black is also a good bet, just don't forget about those pesky zeros.
This brings me to another winning Roulette strategy. If possible, play only on European wheels. American wheels have a zero and a double zero space. European wheels have only one zero, thus slightly increasing your odds. And always remember to set a specific limit and stop playing should you lose it. If you want to learn more, try researching a non-statistically based roulette gambling system.