What does "systematic bias" refer to in research methodology?

Prepare for the EBP Evidence Appraisal Test. Use flashcards and multiple choice questions with detailed explanations. Enhance your skills and readiness for the exam!

"Systematic bias" in research methodology refers to a consistent error that is introduced into the sampling or testing process, leading to results that deviate from the true values or outcomes. This type of bias can occur due to various reasons, such as flawed research design, inappropriate sampling techniques, or the influence of extraneous variables that are not controlled for.

When systematic bias is present, it affects the validity and reliability of the research findings, making them less trustworthy and potentially misleading. For example, if a survey consistently excludes a particular demographic group, the results will not accurately reflect the population as a whole. This contrasts with random variation, which is simply the natural noise in data that can occur without introducing systematic error. By recognizing and minimizing systematic bias, researchers can improve the quality and credibility of their findings, ensuring that conclusions drawn from the research are more likely to be accurate representations of the reality they are studying.

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