The purpose of this study was to determine the improvement of students' creative thinking skills by using research-based learning. The research method used was an experiment with the design of the One-Group Pretest-Posttest Design. The subjects used in this study were 30 students taken by purposive sampling. The instrument used is a test to measure the ability to think creatively. Data analysis techniques used are one sample t-test and N-Gain. The results of the study show that research-based learning can improve students' creative thinking skills in taking mathematical statistics.