RDP 2018-08: Econometric Perspectives on Economic Measurement Equation (E6)

⇒ ∑ v p 2v ∑ v p 1v = ∏ v ( p 2v p 1v ) ( l( p 2v p ¯ 2v , p 1v p ¯ 1v ) ∑ v l ( p 2v p ¯ 2v , p 1v p ¯ 1v ) )