第三章是关于回归系数的可容许估计，这包括统计线性模型不受约束和受约束的情形。

In the third part, we give the admissible estimators of regression coefficients in statistical linear model with or without constraints.

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证明了在均方误差准则下，在该估计类中不存在一致最优不变估计，且方差分析估计是不容许估计。

It is proved that there is no best estimator in the class under mean-squared-error criterion and the Analysis-of-variance (ANOVA) estimator is also inadmissible.

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本文讨论带约束生长曲线模型中回归系数线性估计的泛容许性，给出了回归系数的线性估计在线性估计类中是泛容许估计的充要条件。

In this paper, we will consider the universal admissibility for linear estimators of regression coefficients under growth curve model with respect to restricted parameter sets.

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