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Scratch-off glossary

Definitions for every metric and term used in our platform. Each entry is written to be precise and self-contained — no math background required. For longer explainers, see our scratch-off guides →

Expected Value per Dollar

Expected value per dollar (EV/$) is the average return you can mathematically expect from each dolla…

EV/$

Overall Odds

Overall odds (often written "1 in N") is the probability that any given scratch-off ticket will reve…

Odds

Prize Pool Ratio

Prize pool ratio (PPR) is the percentage of a game's total advertised prize value that remains uncla…

PPR

Burn-Down Rate

Burn-down rate (also called daily drainage rate) is the percentage of a scratch-off game's remaining…

Drain/day

Percentile Rank

Percentile rank indicates where a scratch-off game's current EV/$ sits relative to all other active …

Pct rank

Top Prize Remaining

Top prizes remaining is the count of the highest-tier prize in a scratch-off game that has not yet b…

Top left

Claim Velocity

Claim velocity measures how quickly top prizes are being redeemed over time — typically expressed as…

Claim vel.

Expected Value

Expected value (EV) is the probability-weighted average prize payout for a single scratch-off ticket…

EV
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Quantitative expected-value analysis for North American scratch-off tickets. Sourced directly from official state lottery data feeds.

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