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The set of scores on a mathematics test is 72, 80, 80, 82, 87, 89 and 91. The mean score is

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  1. 24 May, 23:37
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    72 + 80 + 80 + 82 + 87 + 89 + 91 = 581

    581/7 = 83 is the mean score
  2. 24 May, 23:46
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    83

    Step-by-step explanation:

    add all the numbers, then divide by how many numbers there are.

    72+80+80+82+87+89+91=581

    581:7=83
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