2 2 1 2 2 1 3
2 2 1 2 2 3 2
3 3 2 3 2 2 2
2 3 2 1 3 2 3
1 2 3 1 1 2 2
2 2 2 1 1 2 2
xi fi Fi hi Hi
1 IIIII IIII 9 9 .21 .21
2 IIIII IIIII IIIII IIIII IIII 24 33 .57 .78
3 IIIII IIII 9 42 .21 .99
E 42 42 42 .99 .99
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