Question

24. Tukey’s HSD is used in order to: a. establish the significance of the overall F...

24. Tukey’s HSD is used in order to:

a. establish the significance of the overall F ratio b. allocate the degrees of freedom d. none of these

25. Once an F ratio has been found not to be significant, we must immediately:

a. apply Tukey’s HSD b. Increase the alpha error c. re-allocate the degrees of freedom d. none of these

26. Once an F ratio is found to be significant, then:

a. each sample mean must represent a different population b. each sample mean must represent a single population c. each sample mean deviates by the same amount d. none of these

28. In order to calculate an F ratio, there must be:

a. more than one sample group b. interval data c. homogeneous variances among the sample groups d. all of these

30. When several independent variables are manipulated simultaneously, an appropriate analysis would be:

a. one-way ANOVA b. two-way c. partial ANOVA d. none of these

Math   Statistics-And-Probability   
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Answer #1

24) Answer: d) none of these

Explanation: Tukey’s HSD is used in order to find the significant difference between all possible pairs of groups means.

25) Answer: d) none of these

Explanation: Once an F ratio has been found not to be significant then noting to do because the populations means does not differs significantly.

26) Answer: d) none of these

Explanation: Once an F ratio has been found to be significant then apply Tukey’s HSD to find the significant difference between all possible pairs of groups means.

28) Answer: d) all of these

Answer: In order to calculate an F ratio, there must be more than one sample group, data type is interval and homogeneous variances among the sample groups

30) Answer: c) partial ANOV

Explanation: When several independent variables are manipulated simultaneously then appropriate analysis would be: partial ANOVA

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