This standard applies to a series of experiments on random samples drawn from a normal population, in the case of unknown population variance, to estimate the mean of the population; or use the data obtained from the experiment to calculate an interval, so that the interval Include the population mean with the given probability. The assumption that the overall probability distribution follows the normal distribution can be widely satisfied: under certain experimental conditions, the distribution of the obtained test results is often a normal distribution or an approximate normal distribution. This standard assumes that the individuals used for the determination constitute an independent random sample from the original population.
GB/T 3360-1982 history
1982GB 3360-1982 Statistical treatment of data and interpretation Estimation and confidence intervals of means