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'''20/07/2017''' - Cleaned hubs data. Performed preliminary analysis for hubs in stata. See the section on analysis in page [[Hubs Analysis 2017]].
'''21/07/2017''' - review of propensity score matching.
'''24/07/2017''' - Review of propensity score matching and the Hochberg and Fehder (2015) paper.
'''25/07/2017''' - Review of instrumental variables in panel data methods.
'''26/07/2017''' - in order to eliminate any endogeneity in the categorical variable "hub", a potential instrument is real estate taxes. If the real estate taxes are higher, there might be a higher demand for Hubs. Data on mortgage based real estate taxes was downloaded from the census data, using the American Communities Survey. A fixed effects IV regression shows that taxes don't perform as satisfactory IVs in this model.
[[Category:Work Log]]
