Class Mark | 110 | 120 | 130 | 140 | 150 | 160 | 170 | 180 | 190 |
Frequency | 6 | 25 | 38 | 45 | 100 | 75 | 85 | 39 | 50 |
A) 155.3
B) 143.3
C) 157.333
D) 175.3
E) None of these
Correct Answer: C
Solution :
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