Asked in: July 2025 board paperQ.3 If \(\sum f_i d_i = 10{,}000\), \(\sum f_i = 100\) and \(A = 2000\), then find mean \((\bar{x})\).

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Answer: \(\bar{x} = 2100\)

Assumed mean method: \(\bar{d} = \dfrac{\sum f_i d_i}{\sum f_i} = \dfrac{10000}{100} = 100\)

\(\bar{x} = A + \bar{d} = 2000 + 100 = 2100\)

Doubtly AI · 29 Oct 2026 AI-verified · Nov 2026 Report

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