Answer :
Final answer:
The mean score is 82.
Explanation:
The mean score can be calculated by adding up all the test scores and then dividing the sum by the number of scores. In this case, the sum of the three test scores is 85 + 78 + 83 = 246. Since there are three test scores, the mean score is 246 divided by 3, which is 82. Therefore, Jean's mean score in her math class is 82.
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