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  1. 1 Folia Oeconomica Stetinensia

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  1. 1 2012

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  1. 1 Trzpiot G.

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Selected Robust Methods for Camp Model Estimation

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Trzpiot G.
Folia Oeconomica Stetinensia
|
2012
|
vol. 12
|
issue 2
58-71
EN
This paper presents evidence that Ordinary Least Squares estimators of beta coefficients of major firms and portfolios are highly sensitive to observations of extremes in market index returns. This sensitivity is rooted in the inconsistency of the quadratic loss function in financial theory. By introducing considerations of risk aversion into the estimation procedure using alternative estimators measures of variability we can overcome this lack of robustness and improve the reliability of the results.
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