| weighted_cor | Weighted correlation |
| weighted_cov | Weighted covariance |
| weighted_kurtosis | Weighted excess kurtosis |
| weighted_mad | Weighted median absolute deviation |
| weighted_median | Weighted median |
| weighted_quantile | Weighted quantiles |
| weighted_sd | Weighted standard deviation |
| weighted_skewness | Weighted skewness |
| weighted_var | Weighted variance |