2 responses using MLwiN3.01

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yfgeogcmm
Posts: 2
Joined: Mon May 19, 2014 9:12 pm

2 responses using MLwiN3.01

Post by yfgeogcmm »

Dear Chris and other users,
I have a quick question regarding specifying a model for 2 response variables. According to the manual p238 (grey box): http://www.bristol.ac.uk/cmm/media/soft ... al-web.pdf

for some reason, when I click X variable per the instruction in the grey box, there is no option to check J (level 2) in a two-level model.
when I add my level 3 (K), it only allow me to check K (level 3) and still no option to check J (level 2).

I wonder if it is due to the version that I am using or I have done something incorrectly?

Many thanks in advance!
Attachments
this is my 3-level model
this is my 3-level model
manual.png (38.22 KiB) Viewed 3779 times
section in the manual
section in the manual
mymodel.png (35.92 KiB) Viewed 3779 times
ChrisCharlton
Posts: 1348
Joined: Mon Oct 19, 2009 10:34 am

Re: 2 responses using MLwiN3.01

Post by ChrisCharlton »

The reason for this is that your have chosen Binomial responses. This response type has a fixed level-1 variance (level-2 in this case as everything is shifted up a level for multivariate responses), which therefore cannot be estimated. If you had fitted a univariate Binomial response you would find that you couldn't specify a level-1 (i) variance (see chapter 9 on Binomial responses in the MLwiN manual). If you are following the example in the MLwiN manual that you quoted then you will need to set the response types back to Normal and you should then be able to specify a level-2 (j) variance.
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