Guide

Why sample size matters in betting statistics

Almost every misleading betting statistic online is a true number reported without its sample size. A 40% return on investment from twelve bets is noise wearing the costume of evidence.

How much variance to expect

At even-money prices, a strategy with a genuine 3% edge still has a meaningful chance of showing a loss after 100 bets. The signal is small relative to the noise; only volume separates them.

As a rough working rule: under 100 settled bets, treat a record as an illustration of the process rather than proof of an edge. Several hundred settled bets are needed before return on investment becomes a serious estimate.

How to read a performance table

Four checks catch most of the misleading records you will encounter.

  • Look at the settled-bet count before the profit figure.
  • Check that the same selections were tracked across every staking plan being compared.
  • Look for the drawdown, not just the final bankroll.
  • Confirm results are recorded at bet time, not selected after the fact.

How this site handles it

Every published statistic comes from bets recorded by the robot before kick-off and settled from public final scores. The settled-bet count is displayed next to every figure, and no strategy is described as profitable while the sample is too small to support that claim.

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