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anonymous

  • one year ago

Period 1 has 15 students in it and a test average of 86%. Period 2 has 21 students in it and an average of 88%. Period 3 has 12 students in it and an average of 95%. Use weighted means to find the overall average of the classes.

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  1. anonymous
    • one year ago
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    I just want the answer lol

  2. anonymous
    • one year ago
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    well, Period -1 of 15 students with 86% = 12.9 Period -1 of 21 students with 88% = 18.48 Period -1 of 12 students with 95% = 11.4 so for all students of 48 it is = 42.78 = 89.125% Hope its right... :P

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