This study examined that comparison of calibration estimators and verification of whether selection bias can be reduced.
In order to simulate, this study used the Korea Welfare Panel Survey(KOWEPS) and selected auxiliary variables using the LASSO variable selection method could select variable that have a higher correlation with the interest variables.
As a result, the larger sample size had small variance estimation regardless of the correction estimation method, In addtion, relative bias and relative square root error showed high accuracy.
In the correction estimation method, the locking ratio estimation method showed more effective than the regression estimation method.