The questions in this quiz are suitable for GCSE maths students studying approximation, rounding to decimal places, rounding to significant figures, truncation, estimating calculations, limits of ...
An approximation is proposed for the posterior mean and standard deviation of the ability parameter in an item response model. The procedure assumes that approximations to the posterior mean and ...
This paper provides a closed‐form density approximation when the underlying state variable is a one‐dimensional diffusion. Building on Aït‐Sahalia (2002), we show that our refinement is applicable ...
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