A、E(μ<sub>isub>)=0 B、Var(μ<sub>isub>)=σ2 C、Cov(μ<sub>isub>,μ<sub>jsub>)(i≠j) D、μ<sub>isub>~N(0,1) E、X为非随机变量,且Cov(X<sub>isub>μ<sub>isub>)=0
A、E(μ<sub>isub>)=0 B、Var(μ<sub>isub>)=σ2 C、Cov(μ<sub>isub>,μ<sub>jsub>)(i≠j) D、μ<sub>isub>~N(0,1) E、X为非随机变量,且Cov(X<sub>isub>μ<sub>isub>)=0
A、只能由变量x<sub>isub>去预测变量y<sub>isub> B、只能由变量y<sub>isub>去预测变量x<sub>isub> C、可以由变量x<sub>isub>去预测变量y<sub>isub>,也可以由变量y<sub>isub>去预测变量x<sub>isub> D、能否相互预测,取决于变量x<sub>isub>和变量y<sub>isub>之间的因果关系
A、I<sub>5sub>+I<sub>6sub>+I<sub>4sub> =0 B、I<sub>1sub>+I<sub>2sub>-I<sub>3sub> =0 C、I<sub>3sub>-I<sub>5sub>-I<sub>6sub>-I<sub>1sub>-<sub>I2sub> =0 D、I<sub>1sub>+I<sub>2sub>-I<sub>3sub>-I<sub>4sub> =0
A、I<sub>1sub>+I<sub>6sub>-I<sub>4sub> =0 B、I<sub>1sub>-I<sub>2sub>+I<sub>3sub> =0 C、I<sub>3sub>-I<sub>5sub>-I<sub>6sub> =0 D、I<sub>3sub>+I<sub>4sub>-I<sub>2sub>-I<sub>6sub> =0
A、I<sub>csub>+I<sub>bsub>-I<sub>2sub>=0 B、I<sub>csub>-I<sub>bsub>+I<sub>2sub>=0 C、I<sub>csub>+I<sub>bsub>+I<sub>2sub>=0 D、I<sub>csub>-I<sub>bsub>-I<sub>2sub>=0
A、I<sub>bsub>+I<sub>asub>-I<sub>1sub>=0 B、I<sub>bsub>-I<sub>asub>+I<sub>1sub>=0 C、I<sub>bsub>-I<sub>asub>-I<sub>1sub>=0 D、I<sub>bsub>+I<sub>asub>+I<sub>1sub>=0
A、I<sub>1sub>-I<sub>2sub>-I<sub>3sub>-I<sub>4sub> + I<sub>5sub>=0 B、I<sub>1sub>-I<sub>2sub> + I<sub>3sub>-I<sub>4sub>-I<sub>5sub>=0 C、I<sub>1sub>-I<sub>2sub>+ I<sub>3sub> + I<sub>4sub> +I<sub>5sub>=0 D、I<sub>1sub>-I<sub>2sub> + I<sub>3sub>-I<sub>4sub> + I<sub>5sub>=0
A、C<sub>isub>(消费)=500+0.8I<sub>isub>(收入) B、Q<sub>disub>(商品需求)=10+0.8I<sub>isub>(收入)+0.9P<sub>isub>(价格) C、Q<sub>sisub>(商品供给)=20+0.75P<sub>isub>(价格) D、Y<sub>isub>(产出量)=0.65K0.6<sub>isub>(资本)L0.4<sub>isub>(劳动)
A、I<sub>1sub>-I<sub>2sub>+I<sub>3sub>=5A B、I<sub>1sub>-I<sub>2sub>+I<sub>3sub>=-5A C、-I<sub>1sub>+I<sub>2sub>-I<sub>3sub>=0 D、I<sub>1sub>+I<sub>2sub>+I<sub>3sub>=0