Weight RTP by turnover, not by the number of games
An average across different games needs weights that match how much was staked under each assumption.
The distinction that matters
If T1 and T2 are fixed turnover amounts and r1 and r2 are return proportions, combined expected return is T1r1 + T2r2. Divide by T1 + T2 for the turnover-weighted return proportion. A simple average is valid only when the turnover weights are equal; zero total turnover leaves the ratio undefined.
A worked example
Suppose C$100 uses a hypothetical 96% model and C$300 uses a 94% model. Expected return is C$96 + C$282 = C$378 on C$400 turnover, or 94.5%. The simple average of 95% overweights the smaller C$100 component.
Your next steps
- Keep turnover and RTP paired for each component.
- Use a common currency before combining amounts.
- Add expected returns before dividing by total turnover.
- Report no ratio when the denominator is zero.
Where this answer stops
The calculation does not validate either RTP or recommend reallocating play. It explains aggregation under fixed assumptions. Changing stakes in response to outcomes can require a different analysis of the total turnover.
Sources & reading
Original Northline explanation. Worked examples use stated assumptions; they do not establish an operator’s policy or predict personal results. Read how we handle evidence.
An editorial review date is not a new policy effective date. Always check the current source for operator-specific conditions.
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