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【多选题】
两个变量(x，y)，其观测值为(xi，yi，i=1，2，…，n。若显著性水平为a，简单相关系数为 r，则下列说法正确的有（ ）。A.
-1≤r≤1
B.
r=0，x、y之间存性相关
C.
r=-1，完全负线性相关
D.
相关系数检验的临界值表示为
E.
r=0，x、y之间不存性相关
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【单选题】以下程序段的输出结果是 ( ) 。 int u=012,v=0x11,w=10; printf (“%d,%d,%d\n”,u,v,w);
A.
12,11,10
B.
8,16,10
C.
10,17,10
D.
8,17,10
【简答题】Since we are social beings, the quality of our lives depends in large measure on our interpersonal relationships．One strength of the human condition is our tendency to give and receive support from on...
【简答题】Since we are social beings, the quality of our lives depends in large measure on our interpersonal relationships. One strength of the human conditions is our possibility to give and receive support fr...
【单选题】Since we are social beings, the quality of our lives depends in large measure on our interpersonal relationships. One strength of the human condition is our tendency to give and receive support from o...
A.
Social support cushions stress in a number of ways.
B.
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C.
Finally, other people may give us instrumental support
D.
People can't live without social support.
E.
and the absence of such support makes poor health more likely
F.
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【简答题】Since we are social beings，the quality of our lives depends in large measure on our interpersonal relationships.One strength of the human conditions is our possibility to give and receive support from...
【单选题】以下程序段的输出结果是( )。 int u=020,v=0x20,w=20; printf("%d%d%d",u,v,w);
A.
16,32,20
B.
20,20,20
C.
16,16,20
D.
32,16,20
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