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I have my data in the format of: enter image description here

In my study I examined 20 waldorf student and 30 traditional student using concept map. Concept maps can be scored by different scoring methods.

How can I determine which scoring method is the best (most reliable) for each school (e.g. traditional vs. waldorf school)? I've read that G theory (generalizability theory) is applicable for similar cases, but i don't know how to apply for this case.

Thank you!

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  • $\begingroup$ Consider using Cronbach's alpha $\endgroup$ – noumenal Dec 24 '19 at 10:58

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