Number of 6th graders that are very unhappy is 14
Number of 6th graders that are happy is 13
Number of 7th graders that are neutral is 12
Number of 7th graders that are happy is 30
Total number of 7th graders is 80
Number of 8th graders that are very unhappy is 20
Number of 8th graders that are very happy is 2
Number of unhappy students is 59
Number of very happy students is 25
What are the missing values?
Total number of 7th graders = 196 - 50 - 66 = 80
The number of 7th graders that are neutral = 31 - 10 - 9 = 12
The number of 6th graders that are happy = 80 - 13 - 22 - 3 - 12 = 30
The number of 6th graders that are happy = 44 - 1 - 30 = 13
The number of 6th graders that are very unhappy = 66 - 10 - 10 - 19 - 13 = 14.
The number of 8th graders that are very unhappy = 37 - 3 - 14 = 20
Total number of unhappy students = 19 + 22 + 18 = 59
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