Extraneous variables week 4 discussion help

Please do a paragraph about this post with this instruction . post most have  4 or more  sentences . you also have to have a high quality post from a content perspective. This means it also needs to do more than agree with or praise a class mate. If you agree with a classmate, explain why, give an example, share what you learned in the readings

Extraneous variables are variables that interfere with the operations of the phenomena being studied. According to the material in Understanding nursing research: Building an evidence-based practice, “extraneous variables exist in all studies and can interfere with obtaining a clear understanding of the relationships among the study variables” (Burns & Grove, 2010, p. 40). Due to the unwanted influence on the results, the researchers attempt to control extraneous variables through careful studying the design. Thoughtful sample selection is one of the major manifestations of undesirable variables control. The researchers must select participants in such a way that would minimize any interactions from their background. Selection of patients with the same surgeries who receives the same amount and type of medication for a research on pain perception would be one of the examples of control over extraneous variables (Burns & Grove, 2010, p. 40). Another example of such error manage would be in the learning strategy research where all participants have the same knowledge level (Missouri University of Science and Technology website, n.d.).  Subsequently, the systematic control over further variables can improve study outcomes and limit space for errors.

 
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