This book first introduces the simple processing of mathematics education research data, including data summation, finding the median and mode, etc. Then, common analyses of current mathematics education research data are explained, including difference analysis, correlation analysis, variance analysis, regression analysis, etc. Then, based on the previous knowledge, it explains how to conduct multi-factor variance analysis, path analysis, and consistency analysis on the obtained data. This book focuses on the elaboration of operational steps and gives several examples of data analysis in mathematics education research.