The correlation between betting volume and market efficiency is generally considered to be positive; as betting volume increases, market efficiency tends to improve. High betting volume indicates greater participation and liquidity, which allows for more information to be absorbed and reflected in the odds. This collective engagement from a diverse group of bettors can reduce arbitrage opportunities and inefficiencies, leading to odds that more accurately represent the true probabilities of outcomes. Consequently, markets with robust betting volume often feature more accurate pricing, making them more efficient.