5 Lec Q Part 2 - Linearity Checks in Statistical Analysis
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Questions and Answers

Which of the following is a method used to correct non-normally distributed data?

  • B & D
  • Normal probability plot (correct)
  • Histogram
  • Looking at frequencies
  • What percentage of cases will lie within 2 standard deviations of the mean in a normal distribution?

  • 68.26%
  • 95.44% (correct)
  • 99.14%
  • None of the above
  • Which of the following represents the probability that lies within 3 standard deviations of the mean in a normal distribution?

  • 68.26%
  • 95.44%
  • 99.14% (correct)
  • None of the above
  • What is one way to visually assess normality?

    <p>Looking at a histogram of frequencies</p> Signup and view all the answers

    What percentage of cases will lie within 1 standard deviation of the mean in a normal distribution?

    <p>68.26%</p> Signup and view all the answers

    Which of the following is a way to visually assess normality?

    <p>Looking at a histogram</p> Signup and view all the answers

    Which statistical test is used to check the normality of a distribution?

    <p>Kolmogorov-Smirnov D test + All of the above</p> Signup and view all the answers

    Which graphical method can be used to visually assess normality?

    <p>Q-Q plot</p> Signup and view all the answers

    What does a straight line formed by a P-P plot indicate about the variable's distribution?

    <p>It is normally distributed</p> Signup and view all the answers

    Which statistical test is used to test the assumption of equal variance?

    <p>Levene's test</p> Signup and view all the answers

    What does a significant Levene statistic indicate?

    <p>The groups have different variances</p> Signup and view all the answers

    What is the significance level typically used to determine the rejection of the null hypothesis in Levene's test?

    <p>.05</p> Signup and view all the answers

    Which of the following best describes a random factor?

    <p>A factor whose levels are randomly sampled from a large population</p> Signup and view all the answers

    Which of the following best describes a fixed factor?

    <p>A factor whose levels are fixed and not randomly sampled</p> Signup and view all the answers

    In some cases, factors can be used as both fixed and random. Which of the following is an example of such a factor?

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

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