Probability, exercise, student scores, possible outcomes
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A probability exercise to determine the possible scores of students who answer 5 questions with 3 possible outcomes each.
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[...] Probability Calculation Exercise 1 The students answer 5 questions. For each answer, there are only 3 possibilities: a correct answer points), an absence of answer points) or an incorrect answer points). The number of possibilities is therefore finite. We will summarize in the following table all the possibilities, then calculate the score corresponding to each possibility. We will then have all the possible scores and see why some students do not understand their score . Good answers Absence of answer Bad answer Calculs Note 5 25 4 1 18 4 1 17 3 2 11 3 1 1 10 3 2 9 2 3 4 2 2 1 3 2 1 2 2 2 3 1 1 4 1 3 1 1 2 2 1 1 3 1 4 5 -10 4 1 -11 3 2 -12 2 3 -13 1 4 -14 5 -15 The students who have an impossible grade and therefore have reasons not to understand their grade are: Andrew, Clément, Inès, Mila and Chelsea. [...]
