A method for manufacturing a population of parts produced with a manufacturing device, based on analysis of at least one statistical indicator representative of a characteristic dimension of parts, comprising the following automated steps consisting in: a) taking from among the parts produced with the manufacturing device a sample comprising a number n of parts is taken; b) measuring, with a measuring device, the characteristic dimension of each part of the sample, and calculating for the sample a measured value of the statistical indicator; c) calculating, with a calculation device, a mathematical expectation of the proportion of parts in non-conformity relative to a specification on the characteristic dimension, said calculation being made from the measured value of the statistical indicator for the sample taken and the number n of parts of the sample, and further calculating a confidence interval on the statistical indicator unless a unilateral risk α, where α is between 0 and 1, said calculation being made from the measured value of the statistical indicator for the sample taken and the number n of parts of the sample; d) comparing, with a regulating device, a mathematical expectation of the proportion of parts in non-conformity calculated to a threshold value of proportion of parts in non-conformity, and further comparing the lower limit of the calculated confidence interval to a threshold value of the statistical indicator corresponding to the threshold value of proportion of parts in non-conformity; e) regulating, with the regulating device, the manufacturing of parts as a function of the results of comparison of step d), such that: - If the lower limit of the calculated confidence interval is greater than the threshold value of the statistical indicator, no modification is made to the manufacturing flow of parts; - If the lower limit of the calculated confidence interval is less than the threshold value of the statistical indicator and the mathematical expectation of the proportion of parts in non-conformity calculated for the sample is greater than the threshold value of proportion of parts in non-conformity, regulating parameters of the manufacturing device are adjusted and/or the number of parts sampled during later sampling of a sample is increased; - If the mathematical expectation of the proportion of parts in non-conformity calculated for the sample is less than the threshold value of proportion of parts in non-conformity, the manufacturing flow of parts is discontinued. a) taking from among the parts produced with the manufacturing device a sample comprising a number n of parts is taken; b) measuring, with a measuring device, the characteristic dimension of each part of the sample, and calculating for the sample a measured value of the statistical indicator; c) calculating, with a calculation device, a mathematical expectation of the proportion of parts in non-conformity relative to a specification on the characteristic dimension, said calculation being made from the measured value of the statistical indicator for the sample taken and the number n of parts of the sample, and further calculating a confidence interval on the statistical indicator unless a unilateral risk α, where α is between 0 and 1, said calculation being made from the measured value of the statistical indicator for the sample taken and the number n of parts of the sample; d) comparing, with a regulating device, a mathematical expectation of the proportion of parts in non-conformity calculated to a threshold value of proportion of parts in non-conformity, and further comparing the lower limit of the calculated confidence interval to a threshold value of the statistical indicator corresponding to the threshold value of proportion of parts in non-conformity; e) regulating, with the regulating device, the manufacturing of parts as a function of the results of comparison of step d), such that: - If the lower limit of the calculated confidence interval is greater than the threshold value of the statistical indicator, no modification is made to the manufacturing flow of parts; - If the lower limit of the calculated confidence interval is less than the threshold value of the statistical indicator and the mathematical expectation of the proportion of parts in non-conformity calculated for the sample is greater than the threshold value of proportion of parts in non-conformity, regulating parameters of the manufacturing device are adjusted and/or the number of parts sampled during later sampling of a sample is increased; - If the mathematical expectation of the proportion of parts in non-conformity calculated for the sample is less than the threshold value of proportion of parts in non-conformity, the manufacturing flow of parts is discontinued. - If the lower limit of the calculated confidence interval is greater than the threshold value of the statistical indicator, no modification is made to the manufacturing flow of parts; - If the lower limit of the calculated confidence interval is less than the threshold value of the statistical indicator and the mathematical expectation of the proportion of parts in non-conformity calculated for the sample is greater than the threshold value of proportion of parts in non-conformity, regulating parameters of the manufacturing device are adjusted and/or the number of parts sampled during later sampling of a sample is increased; - If the mathematical expectation of the proportion of parts in non-conformity calculated for the sample is less than the threshold value of proportion of parts in non-conformity, the manufacturing flow of parts is discontinued.