The idea of classification of errors or misconceptions was invented by the authors. It is utilized by the authors to divide the misconception responses into six categories. Carelessness and Incorrect method were grouped as error-typed categories where students’ initial misconception responses were due to their carelessness when attempting the questionnaire or the lack of understanding on the topic itself. Misconception is not involved in these two categories. On the other hand, Representativeness, Equiprobability bias, Beliefs and Human control are the four different misconceptions categories on Probability. With verbal and written input from the students, the authors were able to specifically identify each type of misconceptions.