3[单选题] 测定变量之间相关密切程度的代表性指标是 A.估计标准误 B.两个变量的协方差 C.相关系数 D.两个变量的标准差 - 查题网

>> 河南成教 / 统计学

河南成教 / 统计学

正确率：100%

3[单选题]
测定变量之间相关密切程度的代表性指标是

A.估计标准误

B.两个变量的协方差

C.相关系数

D.两个变量的标准差

积分

统计学

参考答案：

点击查看答案

佳题速递：

PaO2低于下列哪项数值时可反射性地引起呼吸加深加快病理生理学(护理本)

1.药物与血浆蛋白结合是决定药物在体内分布的重要因素，不影响药物消除。错误正确生物药剂与药物动力学

下列选择中属于单方民事法律行为的是（）民法学

设备的残余价值与设备的原值之比，是指设备的（）。工程经济学

女性，26岁，1型糖尿病。今日因感冒，食欲减退、少食，餐前按常规注射胰岛素，近午时突然心悸、出汗，继而头晕、视物模糊。急诊处理应采用内科学

1、 Nasreddin put two big baskets of grapes on his donkey and went to market. At midday it was very hot, so he stopped in the shade of a big tree. There were several other men there, and all of them had donkeys of grapes too. After their lunch they went to sleep. After some time, Nasreddin began to take grapes out of the other men's baskets and to put them in his. Suddenly one of the men woke up and saw him. “What are you doing?” he said angrily. “Oh,” said Nasreddin, “Don't worry about me. I am half mad, and I do a lot of strange things.” “Oh, really?” said the other man. “Then why don't you sometimes take grapes out of your baskets and put them in somebody else's baskets?” “You did not understand me”, said Nasreddin. I said that I was half mad, not quite mad.11.Nasreddin went to market _ _ _ _ _ _ _ . A. to sell his donkey B. to buy something C. to sell his grapes D. to find a job 12. Nasreddin stopped _ _ _ _ _ _ . A. under a big tree B. near a big tree C. around a big tree D. in a big tree 13. As Nasreddin was taking away the other men's grapes one of the men _ _ _ _ . A. pretended not to see him B. saw him and got angry C. woke his fellows up D. came at him 14.Nasreddin said that he did a lot of strange things because _ _ _ . A. he was clever B. he was quite mad C. he was foolish D. he was half mad 15.In this story Nasreddin was _ _ _ _ _ _ . A. a selfish man B. a strange man C. a friendly man D. a foolish man 英语(一)