![]() For example, if the 95% PI of the average fill volume of 375 ml bottles is 360–379 ml, you can be 95% confident that the next sampled bottle will have a fill volume that is within this interval. Prediction interval A range of values for a product's characteristic that represents where the value of a single new observation is likely to fall with a specified degree of confidence. For example, if the 95% CI of the average fill volume of 375 ml bottles is 368–372 ml, you can be 95% confident that the true value of the process mean is within this interval. ![]() ![]() Confidence intervals (CI), prediction intervals (PI) and tolerance intervals are commonly used intervals derived from sample statistics.Ĭonfidence interval A range of values that is likely to contain the value of an unknown population parameter, such as the mean, with a specified degree of confidence. ![]()
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