OLS_realtor.m calculates the OLS model results for the realtor median 
housing price index;

IV_realtor.m calculates the IV model results for the realtor median 
housing price index;

IV2_realtor.m calculates the IV2 model results for the realtor median 
housing price index;

Spatial_IRFs_realtor.m calculates the impulse response results for the 
realtor median housing price index.
