RDP 2018-08: Econometric Perspectives on Economic Measurement Equation (E3)

⇒ ∑ v l( p 2v ∑ v p 2v , p 1v ∑ v p 1v )( ln( p 2v p 1v )−ln( ∑ v p 2v ∑ v p 1v ) )=0