Is it possible to randomize the school level variables

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

I'm running HLM in SAS using proc mixed - students nested within schools. I'm thinking that there is heteroskedasticity in two of the schoollevel variables but I'm not sure how to confirm.  That is, when two of the independent variables are at low levels, the outcome variable has little variance, but there is more variability when those predictor variables increase.  I'm not sure how to correct for it.  Is it possible to randomize the school level variables???  I cannot enter school level variables into the random statement in SAS.

I could make an indicator/dummy variable for the low values on those two predictor variables and then leave the continuous variables in the model as well.  Or, I could categorize each of the variables, ensuring that the "low" category is captured. Any advice is much appreciated.
Thanks for your help,

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：Variables randomize Variable possible random increase possible running schools correct