Massachusetts Tests for Educator Licensure (MTEL) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Which aspect is crucial in ensuring the validity of an experiment?

Maintaining a bias towards a specific outcome

Controlling variables adequately

The correct answer emphasizes the importance of controlling variables adequately in an experiment. Validity in research refers to the accuracy and reliability of the findings and conclusions drawn from the study. When variables are controlled properly, researchers can isolate the effect of the independent variable on the dependent variable without interference from confounding factors. This process allows for a clearer understanding of causal relationships, ensuring that the results reflect the true dynamics of the phenomena being studied rather than being skewed by external influences.

If controls are inadequate, valid conclusions may become questionable, as other variables might inadvertently affect the outcome, leading to misleading results. Hence, the control of variables is foundational to experimental design, allowing for reproducibility and generalization of findings.

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Avoiding the use of statistical analysis

Choosing only favorable conditions

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