RDP 2018-08: Econometric Perspectives on Economic Measurement Equation (3)

e^{{\hat{α}}_{2}^{O L S} - {\hat{α}}_{1}^{O L S}} = \prod_{v} {(\frac{p_{2 v}}{p_{1 v}})}^{\frac{1}{V}} \equiv {\hat{P}}_{1, 2}^{J e v o n s}