Wheel bias in roulette is identified through systematic data collection and statistical analysis of spin outcomes. Players and analysts track numerous spins to create a dataset, examining the frequency of results for patterns against expected random distribution. Utilizing tests like the Chi-squared test, they assess whether deviations are significant or due to chance. Repeated controlled trials help confirm findings and address factors like the wheel's condition or dealer influence. If a number or section consistently shows significant bias, it could affect betting strategies.