Measuring Reliability Quiz
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Questions and Answers

What is the formula for calculating reliability based on the ratio of true score variance to observed variance?

  • R_xx = r_ot^2
  • R_xx = 1 - (s_e^2 / s_o^2)
  • R_xx = s_t^2 / s_o^2 (correct)
  • R_xx = 1 - r_oe^2

    • What is the formula for calculating reliability based on the relative lack of error variance?

  • R_xx = s_t^2 / s_o^2
  • R_xx = r_ot^2
  • R_xx = 1 - r_oe^2
  • R_xx = 1 - (s_e^2 / s_o^2) (correct)

    • What is the formula for calculating reliability based on r2 between observed and true scores?

  • R_xx = r_ot^2 (correct)
  • R_xx = 1 - (s_e^2 / s_o^2)
  • R_xx = s_t^2 / s_o^2
  • R_xx = 1 - r_oe^2

    • What is the formula for calculating reliability based on a lack of a correlation between observed scores and error scores?

    <p>R_xx = 1 - r_oe^2</p> Signup and view all the answers

    What does r represent?

    <p>The reliability index</p> Signup and view all the answers

    What formula represents the ratio of error variance to observed variance?

    <p>R_xx = 1 - r_oe^2</p> Signup and view all the answers

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