1. A method for predicting a processing result, comprising: a process of performing a predetermined first standard processing on a plurality of objects to be processed with use of a first processing apparatus set in a certain condition; a process of obtaining a plurality of detected data from a plurality of detectors provided at the first processing apparatus during the first standard processing; a process of performing a certain multivariate analysis with use of the plurality of detected data obtained during the first standard processing, to set weighting references for the plurality of detected data; a process of performing a second standard processing, which is similar to the first standard processing, on a plurality of objects to be processed, which are similar to said the plurality of objects to be processed, with use of the first processing apparatus in another condition or another second processing apparatus of the same kind; a process of obtaining a plurality of detected data from the plurality of detectors provided at the first processing apparatus or from a plurality of detectors provided at the second processing apparatus during the second standard processing; a process of weighting the plurality of detected data obtained during the second standard processing based on the weighting references, and applying the weighted plurality of detected data to the multivariate analysis; and a process of predicting a processing result of the second standard processing based on a result of the application to the multivariate analysis.