Probability chart / Roulette
Roulette Expected Value For Each Bet
Expected value compares payout with probability. European roulette is usually better than American roulette because it has one zero.
FormatChart
TopicRoulette
Quick probability summary
Expected value compares payout with probability. European roulette is usually better than American roulette because it has one zero.
| Concept | Meaning | Roulette note |
|---|---|---|
| Low variance | More frequent, smaller outcomes or simpler decisions | Better for beginners learning controls |
| Medium variance | Balanced decision pressure and outcome swings | Useful after rules are automatic |
| High variance | Rare outcomes, higher advertised payouts, or fast bust risk | Use only with strict limits |
| Myth risk | Streaks, predictors, formulas, and due outcomes | Treat as entertainment claims, not proof |
How to read the chart
The chart is educational. It helps compare relative risk and frequency, but it does not predict the next hand, spin, roll, cashout, or reveal. Use probability to avoid bad assumptions, not to justify larger stakes.
Common mistakes
- Using betting systems as if they beat odds.
- Ignoring the difference between single zero and double zero.
- Increasing bet size after near misses.