A method of extracting marginal density approximations using the multivariate version of the Laplace formula is given and applied to instrumental variable estimators. Some leading exact distributions are derived for the general single equation case which lead to computable formulae and generalize all known results for marginal densities. These results are related to earlier work by Basmann (1963), Kabe (1964) and Phillips (1980b). Some general issues bearing on the current development of small sample theory and its application in empirical work are discussed in the introduction to the paper.
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Length: 34 pages Date of creation: Oct 1981 Date of revision: Publication status: Published in Advances in Econometrics, Vol. 2, JAI Press, 1983, pp. 1-24 Handle: RePEc:cwl:cwldpp:609
Order Information: Postal: Cowles Foundation, Yale University, Box 208281, New Haven, CT 06520-8281 USA
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