1. Compare independent variables, dependent variables, and extraneous variables. Describe two ways that researchers attempt to control extraneous variables. Support your answer with peer-reviewed articles. 2. Describe the “levels of evidence” and provide an example of the type of practice change that could result from each. Please use this cite as a source https://lc.gcumedia.com/nrs433v/nursing-research-understanding-methods-for-best-practice/v1.1/#/chapter/4 Please use another peer review source that not older thats five years. Answer each question separately. Thank you.
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