Formula to find mean for a grouped data is
Formula to find mean for a grouped data is
A) A + \(\frac{∑\hat f_id_i}{\sum f_i}\)
B) A + \(\frac{∑\hat f_id_i}{C}\)
C) A + \(\frac{∑\hat f_id_i}{∑f_i}\) × C
D) None
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Correct option is (A) \(A + \frac{\sum f_i \, d_i}{\sum f_i}\)
\(A + \frac{\sum f_i \, d_i}{\sum f_i}\) is a formula to find the mean for a grouped data.
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