intervalo de confianza

An intervalo de confianza, or confidence interval, is a statistical range that estimates where a population parameter (like a mean or proportion) is likely to fall, based on sample data. For example, if a poll indicates that 60% of people support a policy with a 95% confidence interval of 55% to 65%, it suggests that if we repeatedly took samples, we'd expect 95% of the time the true level of support to be between 55% and 65%. It gives an idea of the uncertainty around the estimate, allowing for informed conclusions without guaranteeing absolute certainty.