yi
- 对模型yi=β0+β1χ1i+β2χ2i+μi的最小二乘回归结果显示,R2为0.92,总离差平方和为500,则残差平方和RSS为()。
- 对回归模型Yi=β0β1χi+μi进行检验时,通常假定μi服从()。
- 收集了行组数据(χi,yi),i=1,2,……,n,为了解变量χ与y间是否有相关关系,可以画()加以考查。
- 收集了n组数据(χi,yi),i=1,2,……,n,为了了解变量X与Y间是否有相关关系,可以使用()加以考察。
- Where’s Wu Yi? —He is ________ Zhang Jie. [ ]
- Hello, can I speak to Huang Yi, please?—Sorry, we don’t have ______________Huang Yi here, you dialed a wrong number.
- Yi Zhongtian’s simple and interesting explanation of history has _________ lots of TV viewers.
- Yi Ran is a girl. ______ is in Class 5, Grade 7.
- Yi Ran is a girl. ______ is in Class 5, Grade 7.