英语翻译To further complicate matters,one rarely if ever knows h

英语翻译
To further complicate matters,one rarely if ever knows how large the complete data set would actually be with the result that it is never possible to know what percentage of the total data set is being brought to bear in the solution of the problem.There are countless examples in civil engineering and dam safety practice where just one extra piece of data (e.g.one more or a slightly deeper drill hole) would have led to a completely different conclusion.Thus,there is no way to demonstrate that sufficient data has been collected to form a mathematically valid approximation (or known degree of approximation) of the complete data set.Unere such circumstances,the best defence against a false sense of security is the sceptical approach of the inquiring mind.
Aside from the problem of the quantity of data,the quality of the data is extremely improtant and it is generally advisable to qualify the data in some way prior to accepting it for use in the analysis process.Without such a process of qualifying data,additional uncertainties and even errors will be introduced into the analysis.There are established procedures to qualify data to protect the integrity of the analysis process.The procedures used to qualify the data and information used in the analysis will normally be specified.