下面哪一项的系数约束不能用F检验来进行假设检验：
A: β2 = 1 且β3= β4/β5
B: β2 =0
C: β1 + β2 = 1 且β3 = -2β4
D: β0 = β1且β1 = 0
A: β2 = 1 且β3= β4/β5
B: β2 =0
C: β1 + β2 = 1 且β3 = -2β4
D: β0 = β1且β1 = 0
举一反三
- 以下哪组原假设不能采用F检验： A: β2 = 1 且β3= β4/β5. B: β2 =0. C: β1 + β2 = 1 且β3 = -2β4. D: β0 = β1且β1 = 0.
- 【单选题】如图示代码,下面哪个是正确的输出结果 A. 0 1 2 3 4 5 B. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 C. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 D. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5
- 【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]
- 下面变量中哪一个可以表示2*3的二维列表? A: A = [[1, 2, 0],[3, -1, 4]] B: A = [[1, 2],[3, 4], [0, 8]] C: A = [[1, 2, 0] [3, -1, 4]] D: A = {[1, 2, 0],[3, -1, 4]}
- 请阅读下面一段程序:arr = np.arange(6).reshape(1, 2, 3)print(arr.transpose(2, 0, 1))执行上述程序后,最终输出的结果为( )。 A: [[[2 5]][[0 3]][[1 4]]] B: [[[1 4]] [[0 3]] [[2 5]]] C: [[[0 3]][[1 4]][[2 5]]] D: [[[0] [3]][[1] [4]][[2] [5]]]