Analyzing method and analyzing system for manufacturing data

An analyzing method for manufacturing data, comprising:

• providing a plurality of models each of which has a correlation value representing a relationship between at least one of a plurality of factors and a target parameter;
• screening, by a model screening circuit, the models according to the correlation values, wherein some of the models whose correlation values are less than a first predetermined value are filtered out;
• listing up a rank information and a frequency information of the factors according to the models;
• screening, by a factor screening circuit, the factors according to the rank information and the frequency information, wherein some of the factors whose frequencies for the models are less than a second predetermined value are filtered out and some of the factors whose best ranks in the models are less than a third predetermined value are filtered out;
• and
• ranking the models and selecting at least one of the models, wherein the at least one of the models is selected according to the frequencies and the best ranks of the models.