回归模型中,[img=268x23]180345a62f20ba7.png[/img]。观察下图,用[img=17x17]180345a637ee0c8.png[/img]表示因子A,用[img=17x17]180345a63fd93a4.png[/img]表示因子B,则[img=94x23]180345a648544d1.png[/img]的估计分别是多少?[img=328x238]180345a65331961.png[/img]
A: 30.5 ,-0.5,-4.5,-14.5
B: 30.5,0.5,4.5,-14.5
C: 30.5,0.5,-4.5,-14.5
D: 30.5,0.5,-4.5,14.5
A: 30.5 ,-0.5,-4.5,-14.5
B: 30.5,0.5,4.5,-14.5
C: 30.5,0.5,-4.5,-14.5
D: 30.5,0.5,-4.5,14.5
举一反三
- 回归模型中,[img=268x23]18037fed3fb1252.png[/img]。观察下图,用[img=17x17]18037fed4857989.png[/img]表示因子A,用[img=17x17]18037fed4ff7047.png[/img]表示因子B,则[img=94x23]18037fed591ef56.png[/img]的估计分别是多少?[img=328x238]18037fed63f6952.png[/img] A: 30.5 ,-0.5,-4.5,-14.5 B: 30.5,0.5,4.5,-14.5 C: 30.5,0.5,-4.5,-14.5 D: 30.5,0.5,-4.5,14.5
- 随机变量X服从均匀分布[img=246x104]1803bbe29f8c799.png[/img]则E(X)=( ) A: 4 B: 4.5 C: 0.5 D: 1
- 已知f(x)=x,g([img=17x17]1803ba6e9f63ed6.png[/img],[img=17x17]1803ba6ea7375f0.png[/img],[img=17x17]1803ba6eaef4fad.png[/img])=[img=17x17]1803ba6e9f63ed6.png[/img]*([img=17x17]1803ba6ea7375f0.png[/img] +1), 其中x,[img=17x17]1803ba6e9f63ed6.png[/img],[img=17x17]1803ba6ea7375f0.png[/img] ,[img=17x17]1803ba6eaef4fad.png[/img]均为自然数,新函数h可递归的构造如下:h(0,x) = f(x), 且h(S(n), x) = g(h(n,x),n,x),请按递归式进行计算下列式子,不正确的是_____。 A: h(1,x) = x B: h(2,x) = 2x C: h(3,x) = 6x D: h(4,x) = 12x
- 已知f(x)=x,g([img=17x17]1803c730b8fbf4a.png[/img],[img=17x17]1803c730c201835.png[/img],[img=17x17]1803c730ca13481.png[/img])=[img=17x17]1803c730b8fbf4a.png[/img]*([img=17x17]1803c730c201835.png[/img] +1), 其中x,[img=17x17]1803c730b8fbf4a.png[/img],[img=17x17]1803c730c201835.png[/img] ,[img=17x17]1803c730ca13481.png[/img]均为自然数,新函数h可递归的构造如下:h(0,x) = f(x), 且h(S(n), x) = g(h(n,x),n,x),请按递归式进行计算下列式子,不正确的是_____。 A: h(1,x) = x B: h(2,x) = 2x C: h(3,x) = 6x D: h(4,x) = 12x
- 已知f(x)=x,g([img=17x17]1802e6f79625d47.png[/img],[img=17x17]1802e6f79e60ef6.png[/img],[img=17x17]1802e6f7a67abbb.png[/img])=[img=17x17]1802e6f79625d47.png[/img]*([img=17x17]1802e6f79e60ef6.png[/img] +1), 其中x,[img=17x17]1802e6f79625d47.png[/img],[img=17x17]1802e6f79e60ef6.png[/img] ,[img=17x17]1802e6f7a67abbb.png[/img]均为自然数,新函数h可递归的构造如下:h(0,x) = f(x), 且h(S(n), x) = g(h(n,x),n,x),请按递归式进行计算下列式子,不正确的是_____。 A: h(1,x) = x B: h(2,x) = 2x C: h(3,x) = 6x D: h(4,x) = 12x