This was the first method of finding the probability of the occurrence of an error of a given size when that error is expressed in terms of the variability of the distribution as a unit, and the first identification of the calculation of probable error.
Este foi o primeiro método de atopar a probabilidade de que ocorra un erro dun tamaño dado cando se expresa en función da variabilidade da distribución, e a primeira identificación do cálculo do erro probable.