测试时无法正确识别number of groups

相似文件 换一批

是 否 +2 论坛币

k人 参与回答

经管之家送您一份

应届毕业生专属福利!

求职就业群

赵安豆老师微信：zhaoandou666

经管之家联合CDA

送您一个全额奖学金名额~ !

立即领取

感谢您参与论坛问题回答

经管之家送您两个论坛币！

+2 论坛币

确实没学过stata，黑暗中摸索啊。来这里请教各位大神
我找的数据里面的group number是168个，测试3年的数据，observation是504。
但是用stata做panel data分析的时候，无法识别数据是168个group number，而显示的是number of groups是502
请问这个问题该如何解决呢？多谢！





其他问题：

1.变量alr的coefficient显示的是omitted
2.进行panel data 测试是无法把控制变量cr加入independent variable进行测试，每次加入cr后，显示的是“the panel variable cr may not be included as an independent variable”

扫码加我 拉你入群

请注明：姓名-公司-职位

以便审核进群资格，未注明则拒绝

分享0 收藏0 回帖

关键词：Groups Number Group NUM Ber included number groups 如何

your data may have problem with the variable cr.

alr is omitted because it's collinear with other variables, so add it is not necessary

you cannot one variable as both panel and independent variable

jjjj6666 发表于 2014-3-28 21:09
your data may have problem with the variable cr.

alr is omitted because it's collinear with other ...

感谢回复
我就是没研究出来CR的问题在哪儿
“you cannot one variable as both panel and independent variable”这个怎么解释？我没有变量既做dependent variable又做independent variable啊

sorry, as panel and dependent variable.

Try "tab cr" and see if the cr variable has problem