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Problem solving A researcher wonders about the correlates of 'success' in statistic courses. She correlated level of motivation (hours of study) and statistics grade. She

Problem solving

A researcher wonders about the correlates of 'success' in statistic courses. She correlated level of motivation (hours of study) and statistics grade. She obtained an r = .32.

The obtained coefficients were: 12 for the y intercept and 1.17 for the slope.

  1. Is the relationship strong, moderate, or weak?
  1. What is the percentage of the variability in statistics grade that cannot be explained by motivation?

  1. What is the percentage of the variability in statistics grade that can be explained by motivation (hours of study)?

  1. Write the regression equation if motivation will be used to predict grades in statistic.

  1. Explain the important parts of your regression equation in layman's term.

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