Question: DNP student Jin has collected data in his practice on how long an artificial knee lasts and how much weight patients lose after surgery (because

DNP student Jin has collected data in his practice on how long an artificial knee lasts and how much weight patients lose after surgery (because they are more mobile with the new knee). Which of the following facts about his data is a violation of the assumptions of regression analysis (making it difficult to analyze the relationship between weight loss and life of the artificial knee)?

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