MCQ
The formula to find mean by direct method is
- A$A+\bar{d}$
- B$\frac{\sum f_i d_i}{\sum f_i}$
- C$\frac{\sum f_i d_i}{\sum d_i}$
- D$\frac{\sum f_j x_i}{\sum f_i}$
✓
Answer
$\frac{\sum f_i x_i}{\sum f_i}$
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