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The total variance for English subject is: (Choose the best answer)
Math English
school A 80 87
67 77
70 76
48 80
60 67
30 78
47 67
66 56
55 75
90 66
36 23
99 45
78 44
school B 80 87
77 85
70 87
88 80
88 80
60 88
88 77
77 80
87 75
90 90
80 93
78 84
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