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1.点估计1.1最大似然估计1.1.1似然函数1.1.2最大似然估计1.1.3最大似然估计例子1.2矩估计（MethodofMoments,MoM）1.2.1矩估计思想1.3估计量的评选标准2.区间估计2.1置信区间2.1.1置信区间引入2.1.2置信区间2.2单个正态总体的均值和方差的