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by erima
Mon Sep 27, 2010 2:44 pm
Forum: MLwiN user forum
Topic: How to compute ICC when L2 variance is negative?
Replies: 1
Views: 4647

How to compute ICC when L2 variance is negative?

Hello,
I am fitting a fixed factor model and the variance at level 2 is negative. Would any of you know what this means, and how I compute an ICC ? Shall I use the absolute value when computing it ? If so, this would underestimate the total variance : varL2negvalue / varL2neg_value + VarL1
Thank you ...