1.参数值估计(OLS) Q=∑e=(-) O ab OO ∑(-(6+6x+…+6x) ab ab. ob1.参数值估计(OLS) ( ) ( ( ))   − = = = = − + + + = = n i n i n i i Y b b X b X Q y y ki k i i e i i 1 2 1 2 1 2 ˆ ˆ ˆ ˆ 1 0 1                  =   =   =   =   0 ˆ 0 ˆ 0 ˆ 0 ˆ 2 1 0 bk Q b Q b Q b Q 