👉 Commissioner's math, also known as the "Commissioner's Rule," is a statistical method used to estimate population parameters when dealing with small sample sizes or when the population distribution is unknown. It involves calculating the proportion of successes (e.g., defective items, yes/no responses) in a sample and then using this proportion to infer the population proportion. The formula is P(p) = (number of successes in sample) / (sample size), where p is the estimated population proportion. This method is particularly useful in scenarios like market research, quality control, and opinion polling where obtaining a large sample is impractical. However, it assumes that the sample is randomly selected and that the successes are independent, which might not always be the case in real-world applications.
