the finite population mean under a two-phase sampling system. The Bias and Mean Square Error (MSE) of the proposed … exponential regression cum ratio estimator when compared using the cri- teria of bias, mean square error and percentage relative … efficiency. The proposed es- timator can be used to estimate the averages of economic variables such as inflation, exchange rate …

less data. The choice of survey mode, therefore, involves a potential tradeoff between bias and variance of estimators. I … dilemma. I then use a simulation study to show how and under what conditions a hybrid survey design can improve efficiency of …

When analyzing what determines the efficiency of production, regressing efficiency scores estimated by DEA on …-oriented efficiency. To demonstrate the capabilities of the new command simarwilson we use data from the Penn World Tables and the Global … governance of a country for its efficiency of output production. …

, slaves, and prisoners. -- self-selection ; selection bias ; heights ; anthropometrics ; standards of living …

bias. We show that grouping can also create substantial aggregation bias, calling into question how well pseudo-panels can … mimic panel estimates. We create two metrics for assessing the grouping process, one for each potential source of bias. If …