Qualitative evaluation does not use mathematical methods, but directly makes qualitative conclusions to the evaluation object according to the evaluator's observation and analysis of its usual performance, reality and state or literature, such as rating and writing comments. Qualitative evaluation is a bid evaluation method that uses the knowledge, experience and judgment of experts to evaluate and compare by secret ballot. Qualitative evaluation emphasizes observation, analysis, induction and description.
Quantitative evaluation is to use mathematical methods to collect and process data and judge the value of quantitative results of the evaluation object, such as using educational measurement statistics methods and fuzzy mathematics methods. , describe and judge the characteristics of the evaluation object with numerical values.
Qualitative evaluation application:
As far as the phenomenon applied in the field of educational evaluation is concerned, qualitative evaluation pays more attention to students' qualitative development and the consistency between educational results and educational goals; It is a substantial evaluation mechanism that emphasizes the systematic investigation of students' advantages and disadvantages and makes a qualitative analysis and explanation of individual uniqueness.
Therefore, qualitative evaluation can pay attention to broader educational goals and learning results, emphasize on-site and professional judgment, and try to explain and infer students' performance with pedagogical and psychological significance. If quantitative evaluation focuses on "quantity", tends to be abstract and focuses on quantitative description, then qualitative evaluation focuses on "quality", tends to be concrete and focuses on qualitative description. Therefore, qualitative evaluation is a concept with modern humanistic thought and developmental evaluation.