The formula to find mean from a grouped frequency table is X = A + Σ f_iu_i/Σ f_i × h . In the formula u_i = ... (A) x_i + A/h (B) (x_i - A) (C) x_i - A/h (D) A - x_i/h

Find the correct answer: The formula to find mean from a grouped frequency table is X̄ = A + (Σfᵢuᵢ / Σfᵢ) × h. In the formula uᵢ = ...

The formula to find mean from a grouped frequency table is \( \bar{X} = A + \frac{\sum f_iu_i}{\sum f_i} \times h \). In the formula \(u_i = \) ...

(A) \(\frac{x_i + A}{h}\) (B) \((x_i - A)\) (C) \(\frac{x_i - A}{h}\) (D) \(\frac{A - x_i}{h}\)

Doubtly Asked 24 Oct 2026 Save WhatsApp Report

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Answer: (C) \(u_i = \frac{x_i - A}{h}\)

In the step deviation method, the deviation \(d_i = x_i - A\) is divided by the class width \(h\), giving \(u_i = \frac{x_i - A}{h}\). Option (B) is only \(d_i\), not divided by \(h\).

Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report

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Find the correct answer: The formula to find mean from a grouped frequency table is X̄ = A + (Σfᵢuᵢ / Σfᵢ) × h. In the formula uᵢ = ...

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