Correlations and Critical Reading Quiz
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Questions and Answers

What is the interpretation of a correlation coefficient of r = .5?

  • A large effect (correct)
  • A moderate effect
  • A weak effect
  • A small effect

    • When is Spearman’s rank correlation used?

  • For linear relationships
  • For measuring variance
  • For nonlinear relationships (correct)
  • For fitting straight lines

    • What does the Pearson’s correlation coefficient measure?

  • Nonlinear relationships
  • Outliers
  • Variance
  • Linear relationships (correct)

    • What does r² represent in correlation?

    <p>The proportion of variance accounted for by the relationship between two variables</p> Signup and view all the answers

    In psychological research, what is the interpretation of a correlation coefficient of r = .3?

    <p>A moderate effect</p> Signup and view all the answers

    What is the interpretation of a correlation coefficient of r = .1?

    <p>A small effect</p> Signup and view all the answers

    What can greatly influence the value of the correlation coefficient?

    <p>Outliers</p> Signup and view all the answers

    When is it appropriate to calculate a correlation coefficient for a given data set?

    <p>After visual inspection of the data</p> Signup and view all the answers

    What is the significance of using z-scores in correlation analysis?

    <p>Z-scores allow for comparisons across variables that are on different scales</p> Signup and view all the answers

    In APA style table for summarizing correlations, what should be included?

    <p>Both the r-values and the p-values</p> Signup and view all the answers

    When summarizing a set of correlations in a table, what should you avoid doing?

    <p>Cut and paste output directly into a report</p> Signup and view all the answers

    What does a significant weak-to-moderate positive correlation between two variables indicate?

    <p>There is a positive relationship between the variables, but it is not very strong</p> Signup and view all the answers

    What is the purpose of reporting data in a table in correlation analysis?

    <p>To provide a summarized view of the correlations</p> Signup and view all the answers

    What is the mean and standard deviation of z-scores?

    <p>Mean of 0 and standard deviation of 1</p> Signup and view all the answers

    When using z-scores, what becomes comparable across variables?

    <p>Variables on different scales</p> Signup and view all the answers

    What should be the focus of interpreting a set of correlations presented in a table?

    <p>The relevant findings</p> Signup and view all the answers

    What kind of relationships can be transformed into linear ones using z-scores?

    <p>Non-linear relationships</p> Signup and view all the answers

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