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Suppose you want to research whether exam performance differed based on test anxiety levels among students. Your variables are exam performance on a scale of

Suppose you want to research whether exam performance differed based on test anxiety levels among students. Your variables are exam performance on a scale of 0 - 100 points; and test anxiety levels, which has three groups (low-stress, moderate-stress, high-stress).

Identify the most appropriate statistical test and provide rationale supporting your answer.

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