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ls grade_num @expand(course_dept_code)
works for an unstructured file. When I turn the file into a panel with a different variable for the id, I get nonsingular matrix.
Uh, what's going on?
EViews Gareth wrote:Without seeing it is hard to be certain, but at a guess it is knifeedge singular. Panel LS goes through a slightly different calculation routine, and I’d guess they differ in triggering singular
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