To find the bias and mean square error of ratio estimator, it is usually assumed that for all possible samples. Koop [2] suggested a new approach to overcome this assumption. This note examines Koop's approach and shows that the assumption is still necessary.
No takes yet. Share an insight, caveat, or question.
Sukhatme et al. (1973) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: