Investment              US Investment Data
NeweyWest               Newey-West HAC Covariance Matrix Estimation
PublicSchools           US Expenditures for Public Schools
estfun                  Extract Estimating Functions
isoacf                  Isotonic Autocorrelation Function
kweights                Kernel Weights
vcovHAC                 Heteroskedasticity and Autocorrelation
                        Consistent (HAC) Covariance Matrix Estimation
vcovHC                  Heteroskedasticity-Consistent Covariance
                        Matrix Estimation
weightsAndrews          Kernel-based HAC Covariance Matrix Estimation
weightsLumley           Weighted Empirical Adaptive Variance
                        Estimation
