设[tex=6.357x1.286]Hl6KOQUxBtQGuHIDH5YOE0ppGsyq9WEkBiRqjY9Lm60=[/tex]是一组样本观测值，则其标准差是未知类型：{'options': ['[tex=8.929x3.5]R9WtSYmvBjHrvlRS/OX3Id9KBjN9VtHHS2B8TbT0+TtDhqnvGWnCFl6shZo0zglK9RD8Zd0Y6wO8Qd0dP67QDry0r9NwsQLIZ6EPocg+eLo=[/tex]', '[tex=9.143x3.5]uDjNH4vL6UOXEfgIQ9C/+OPX3aCa42Z9LyVmzyeuty+1HMvRNryoheJnA6k0OAK2ESPsBlAig3GZxj012J1Iqv2412UBqFr1rc9t2Ged8h8=[/tex]', '[tex=6.357x2.714]KbXrMEP8jmCWx3KvAIi+Wqng0eLzV0Hl6KOBnQ0LvVTbLb5tfazfem+BSDNb1Ax0jGFmFszpQC8npyfDbIcXMA==[/tex]', '[tex=5.857x2.714]KbXrMEP8jmCWx3KvAIi+WoPV2scYXnfDMfAgG0eLtj08GJ3RQgPcCJgPvJvFwt85GNBJ+PPqWT3CkrMGrGNqVA==[/tex]'], 'type': 102}

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2022-06-14

设[tex=6.357x1.286]Hl6KOQUxBtQGuHIDH5YOE0ppGsyq9WEkBiRqjY9Lm60=[/tex]是一组样本观测值，则其标准差是未知类型：{'options': ['[tex=8.929x3.5]R9WtSYmvBjHrvlRS/OX3Id9KBjN9VtHHS2B8TbT0+TtDhqnvGWnCFl6shZo0zglK9RD8Zd0Y6wO8Qd0dP67QDry0r9NwsQLIZ6EPocg+eLo=[/tex]', '[tex=9.143x3.5]uDjNH4vL6UOXEfgIQ9C/+OPX3aCa42Z9LyVmzyeuty+1HMvRNryoheJnA6k0OAK2ESPsBlAig3GZxj012J1Iqv2412UBqFr1rc9t2Ged8h8=[/tex]', '[tex=6.357x2.714]KbXrMEP8jmCWx3KvAIi+Wqng0eLzV0Hl6KOBnQ0LvVTbLb5tfazfem+BSDNb1Ax0jGFmFszpQC8npyfDbIcXMA==[/tex]', '[tex=5.857x2.714]KbXrMEP8jmCWx3KvAIi+WoPV2scYXnfDMfAgG0eLtj08GJ3RQgPcCJgPvJvFwt85GNBJ+PPqWT3CkrMGrGNqVA==[/tex]'], 'type': 102}

设[tex=6.357x1.286]Hl6KOQUxBtQGuHIDH5YOE0ppGsyq9WEkBiRqjY9Lm60=[/tex]是一组样本观测值，则其标准差是
未知类型：{'options': ['[tex=8.929x3.5]R9WtSYmvBjHrvlRS/OX3Id9KBjN9VtHHS2B8TbT0+TtDhqnvGWnCFl6shZo0zglK9RD8Zd0Y6wO8Qd0dP67QDry0r9NwsQLIZ6EPocg+eLo=[/tex]', '[tex=9.143x3.5]uDjNH4vL6UOXEfgIQ9C/+OPX3aCa42Z9LyVmzyeuty+1HMvRNryoheJnA6k0OAK2ESPsBlAig3GZxj012J1Iqv2412UBqFr1rc9t2Ged8h8=[/tex]', '[tex=6.357x2.714]KbXrMEP8jmCWx3KvAIi+Wqng0eLzV0Hl6KOBnQ0LvVTbLb5tfazfem+BSDNb1Ax0jGFmFszpQC8npyfDbIcXMA==[/tex]', '[tex=5.857x2.714]KbXrMEP8jmCWx3KvAIi+WoPV2scYXnfDMfAgG0eLtj08GJ3RQgPcCJgPvJvFwt85GNBJ+PPqWT3CkrMGrGNqVA==[/tex]'], 'type': 102}

答案：

B

举一反三

内容

0
以下程序段实现的输出是（）。for(i=0;i<;=9;i++)s[i]=i;for(i=9;i>;=0;i--)printf("%2d",s[i]);[/i][/i] A: 9 7 5 3 1 B: 1 3 5 7 9 C: 9 8 7 6 5 4 3 2 1 0 D: 0 1 2 3 4 5 6 7 8 9
1
设DES加密算法中的一个S盒为： 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 14 4 13 1 2 15 11 8 3 10 6 12 5 9 0 7 0 15 7 4 14 2 13 1 10 6 12 11 9 5 3 8 4 1 14 8 13 6 2 11 15 12 9 7 3 10 5 0 15 12 8 2 4 9 1 7 5 11 A: 1010 B: 0001 C: 1011 D: 0111
2
list(range(-1,10,2)) A: [0, 2, 4, 6, 8, 10] B: [-1, 1, 3, 5, 7, 9] C: [0, 2, 4, 6, 8]
3
下面语句的输出结果是？range(len('HelloWorld')) A: [1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11] B: 11 C: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] D: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
4
下面是图的拓扑排序的是？(多选)[img src="https://i1.chinesemooc.org/course/formula/201610/eb69927aaf8baae83211ee3fadf836e7.png"] A: 2 8 0 7 1 3 5 6 4 9 10 11 12 B: 2 8 7 0 6 9 11 12 10 1 3 5 4 C: 8 2 7 3 0 6 1 5 4 9 10 11 12 D: 8 2 7 0 6 9 10 11 12 1 3 5 4