How to measure the accuracy of data with error band?

Error band is a method to measure the accuracy of data. The narrower the error band, the higher the data accuracy, and the wider the error band, the lower the data accuracy. There are many ways to calculate the error band, and the common ones are as follows:

-Confidence interval method: calculate an interval according to the sample data, so that the interval contains the real parameter values of the population with a certain confidence level.

-Analysis of variance: Evaluate the reliability of sample data by comparing the differences between two or more samples.

-Hypothesis test method: the reliability of sample data is evaluated by hypothesis test.