💰 Expected Value
Add the outcomes of a bet · their chances and payoffs · and read the probability-weighted expected value and net gain live.
| Chance (%) | Result | Remove |
|---|---|---|
Chances add up to 100%
Expected value$215
Expected net gain/loss+$115
Favourable · the average payoff beats the stake.
How it works
Expected value is the probability-weighted average of every outcome: multiply each result by its chance (as a decimal) and add the products. Above your stake the bet is favourable on average; below it, it is a losing proposition. Note that expected value ignores risk · a bet can be favourable on average and still carry a real chance of ruin.
