Standard Deviation of Percentages in Betting
How to read the standard deviation of percentages like hit rate, why a 60% prop on 10 games proves little, and how to size the error bar around any rate.
betting math
Hit Rate Percentages: What 60% Really Means
Hit rate percentages look simple until you price them. Learn what a 60% prop hit rate is worth, when it beats the vig, and how to read it honestly.
Parlay Odds by Leg Count: 3 to 6 Legs
See how parlay odds by leg count change from 3 to 6 legs, what the vig really costs you, and how to price each leg before you bet. 21+.
Hit Rate vs Edge: Which Prop Number Wins?
Hit rate vs edge in player props: what each number really means, why a 60% hit rate can still be a bad bet, and how to read both together.
Mean Absolute Deviation for Prop Bettors
Mean absolute deviation shows how consistent a player really is. Learn to compare two props with the same average and pick the safer over. 21+.
Parlay Payout by Team Count: 3 to 6 Legs
How a 3, 4, 5 or 6 team parlay payout is really calculated, what the vig costs per leg, and how to check the math yourself. 21+, variance is real.
How Do Parlays Work? The Math, Honestly
How do parlays work? A plain-English breakdown of parlay odds math, a worked 3-leg example, same-game parlays, correlation, and the vig you pay per leg.
Normal Distribution in Player Props
A normal distribution calculator can price some player props and badly misprice others. Here is when the bell curve works, with real StatsBench data.
Odds Ratio in Betting: What It Means
What the odds ratio means for bettors, how to calculate it from two prop prices, and how to use it to compare edges. Real StatsBench prop data. 21+.
Z-Score in Betting: Reading Prop Charts
A z-score chart turns a prop line into a probability. Learn how to read it, where it breaks, and how to test props with real StatsBench data. 21+.