Types of Variables in Statistical Research

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Questions and Answers

What is the primary purpose of identifying the type of variables in a statistical research study?

  • To make the data more visually appealing
  • To ensure the data is properly formatted
  • To comply with research regulations
  • To determine the appropriate statistical tests to use (correct)

Which of the following is NOT a type of quantitative variable?

  • Ordinal
  • Binary (correct)
  • Continuous
  • Discrete

If a variable represents categories that can be ordered in a meaningful way, what type of variable is it?

  • Nominal
  • Continuous
  • Ordinal (correct)
  • Discrete

Which of the following is a true statement about quantitative variables?

<p>The numbers represent real amounts that can be added, subtracted, divided, etc. (B)</p>
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If a variable can be used as both a quantitative and categorical variable, what type of variable is it?

<p>Ordinal (B)</p>
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Which type of variable is the average star rating on product reviews?

<p>Continuous (B)</p>
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In the example experiment, which variable is the independent variable?

<p>Salt addition (B)</p>
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Which type of variable cannot be classified as independent or dependent in the example experiment?

<p>Time (C)</p>
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In correlational research, what are the terms used to describe the two variables being examined?

<p>Predictor and outcome (C)</p>
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What is the purpose of controlling variables in an experiment?

<p>To focus on the experimental treatment (B)</p>
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