Last month in Points of Significance, we showed how samples are used to estimate population statistics. We emphasized that, because of chance, our estimates had an uncertainty. This month we focus on ...
Finite-difference approximations for the first derivative, valid halfway between equidistant gridpoints, are in general much more accurate than the corresponding approximations, which are valid at ...
Most comparative studies find that the discrete-choice contingent valuation method (DC-CVM) yields higher willingness-to-pay (WTP) estimates than the open-ended (OE) format. In this paper, we discuss ...
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