What is an extraneous variable?
Variables in Science:
Do college students prefer sausage or pepperoni pizza? If you were to design an experiment to determine whether a group of college students prefer sausage or pepperoni pizza you wold need to design an experiment to collect data about their preferences. Hopefully analyzing the data generated by your study would allow you to determine which pizza topping is preferred.
Answer and Explanation:
In designing your experiment you need to be aware of potential variables beyond your control, that could affect your results. These variables are...
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from Psychology 105: Research Methods in PsychologyChapter 10 / Lesson 2