Biostatistics and Research Methodology: F-Ratio Calculation
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Questions and Answers

How can the sum of squares of deviations for residual variance be calculated?

  • Add the result of the sum of SS between columns and SS between rows from total SS
  • Divide the result of the sum of SS between columns and SS between rows by total SS
  • Subtract the result of the sum of SS between columns and SS between rows from total SS (correct)
  • Multiply the result of the sum of SS between columns and SS between rows by total SS

    • What does the Degrees of Freedom for variance between columns depend on?

  • The number of rows
  • The number of columns (correct)
  • The total sum of squares
  • The correction factor

    • In ANOVA, what does the F-Ratio measure?

  • The variance within rows
  • The total sum of squares
  • The ratio of two variances (correct)
  • The variance between columns

    • How is Two-Way ANOVA different from a paired t-test?

    <p>Two-Way ANOVA uses more than two treatments, while a paired t-test uses two treatments</p> Signup and view all the answers

    Why is Two-Way ANOVA considered an extension of the paired t-test?

    <p>Because both methods involve comparing more than two treatments</p> Signup and view all the answers

    What is the purpose of calculating the F-ratio in a one-way ANOVA?

    <p>To determine the significance of the difference among several sample means</p> Signup and view all the answers

    Which of the following statements about the interpretation of the F-ratio is correct?

    <p>The higher the calculated F-ratio above the table value, the more definite and sure the conclusions can be</p> Signup and view all the answers

    Which of the following components is included in the one-way ANOVA table?

    <p>All of the above</p> Signup and view all the answers

    What is the formula used to calculate the F-ratio in a one-way ANOVA?

    <p>F-Ratio = MS between / MS within</p> Signup and view all the answers

    What is the purpose of the ANOVA table?

    <p>To provide a summary of the calculations performed in the one-way ANOVA</p> Signup and view all the answers

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