In other words, a confidence interval is the probability that a value will fall between an upper and lower bound of a probability distribution. For example, given a 99% confidence interval, stock XYZ's return will fall between -6.7% and +8.3% over the next year. In layman's terms, we are 99% confident that the return's of holding XYZ stock over the next year will fall between -6.7% and +8.3%.
доверительный интервал
Довірчий інтервал