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Crystal2022-05-03 12:23:27
B The value of the lag slope coefficients should all be less than 1.
C The absolute value of the lag slope coefficients should be less than 1.
D The sum of the lag slope coefficients should be less than 1.
B选项说的是所有滞后项(其实就是自变量)前的系数都要小于1
C选项说的是滞后项前系数的绝对值都要小于1
D选项说的是滞后项所有系数相加求和,这个和要小于1
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