<![CDATA[Critical thinking ability is an essential component in solving mathematical problems, particularly in mathematical statistics topics such as probability. This study aims to analyze students' critical thinking abilities in solving probability problems in terms of extrovert and introvert personality types. The study employs a qualitative approach using a case study method. The research subjects consisted of two students with extrovert personality types and two students with introvert personality types, selected through the Myers-Briggs Type Indicator (MBTI) test. The research instruments included the MBTI personality test, a written test on probability, an interview guide, and an observation sheet. The data were analyzed through data reduction, data display, and conclusion drawing in an interactive manner. The results of the study indicate that extroverted students tend to be able to identify basic information from the problem but show weaknesses in evaluation, inference, explanation, and self-regulation. On the other hand, introverted students demonstrate a more systematic, reflective, and logical thinking pattern, although they sometimes lack verbal explanations for their chosen strategies. These findings suggest that personality type influences the quality of students' critical thinking abilities in solving probability problems. Therefore, personality-based learning strategies need to be developed to optimize students' critical thinking skills in mathematical statistics learning.]]>
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