Sample selection bias
A)occurs when a selection process influences the availability of data and that process is related to the dependent variable.
B)is only important for finite sample results.
C)results in the OLS estimator being biased, although it is still consistent.
D)is more important for nonlinear least squares estimation than for OLS.

Question

Quizplus · Accepted Answer

Sample selection bias occurs when the selection process used to obtain the data is related to the dependent variable. This can result in a biased estimator and affect the validity of the statistical analysis. It is a common issue in observational studies and survey research.

Sample Selection Bias