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
Answered Feb 05, 2023
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.
Correct Answer - 4.25
Correct Answer - 6.2
Correct Answer - (i) सत्य (ii) असत्य (iii) सत्य (iv) असत्य
Correct Answer - 27.2
(C) 250 to 400
Having clause is used to further filter those groups of records which will be generated through group by clause. For example: Select max(marks) from student group by classes having classes in (10,12); Above...
Correct option is (A) Assumed mean In formula \(\overline X = A + \frac{\sum f_i d_i}{\sum f_i} ,\) letter A represents for assumed mean.
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