I believe I tried every test on both SPSS and Stata, but I keep on encountering problems.
Maybe you can help me to think from scratch.
The dependent variable is logo (0 or 1 whether there is a logo on the label or not)
The independent variable is price (can be in euro's or in 3 ordinal price categories)
There are 5 control variables
4 are either in dummy or categorical: Region(44 different), Country(9 different), Store(5 different), Colour(2 different).
1 is the number of hectares but can be transformed into categories as well.
N=161
Problem,
some Regions occur only once and are therefore perfect predictors ( collinearity error)
I tried to categorize the regions, but the results don't seem to be right.
What test should I pick?
And what code should I use?
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