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

Jude Ford

12 September, 19:46

+1

Answers (1)

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Dario · 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%