This talk introduces two Stata routines to implement the non-parametric heteroskedasticity and autocorrelation consistent (SHAC) estimator of the variance–covariance matrix in a spatial context, as proposed by Conley (1999) and Kelejian and Prucha (2007). The (SHAC) estimator is robust...

The World Bank's World Development Indicators (WDI) compilation is a rich and widely used dataset about development of most economies in the world. However, after obtaining the data from the World Bank’s web site or the WDI CD-ROM, users need to manage or reorganize the data in a certain way...

The ultimate goal of most non-market valuation studies is to obtain welfare measures i.e. mean and/or median willingness to pay (WTP) and confidence intervals. While the delta (nlcom) and bootstrap (bs) methods can be used for constructing such confidence intervals in Stata, they are not...