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.

87.3%

88.7%

89.1%

91%

Question

6 April, 04:44

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Yadiel Lloyd · Answer 1

15+21+12=48 So: 1548 (0.86) + 2148 (0.88) + 1248 (0.95) = ? and put it into a decimal!

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.87.3%88.7%89.1%91%