Biology Forums - Study Force

In a study comparing 4 group means, the F-ratio is statistically significant. This means that:
 
  a. There is a significant difference between each of the four group means.
  b. There is a significant difference between at least two of the four groups.
  c. The variation within each group is much larger than in results that are not significant.
  d. None of these.

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In a study comparing 4 group means, the number of the between groups degrees of freedom is:
 
  a. The total sample size.
  b. One.
  c. Three.
  d. Four.

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The F-ratio:
 
  a. Reflects the variation among the means of several groups in relation to the variation within the groups.
  b. Contains a numerator that consists of the variation between the means of each group divided by the between groups degrees of freedom.
  c. Contains a denominator that consists of the variation in the dependent variable among the individual cases within each group divided by the within groups degrees of freedom.
  d. All of these.

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