8. Write your interpretation of the results as you would in an APA-formatted jou

Question

8. Write your interpretation of the results as you would in an APA-formatted journal.

9. Is there a difference in your ? nal interpretation when comparing the results of the LSD post hoc test versus Tukey HSD test? Provide a rationale for your answer.

10. If the researcher decided to combine the two Treatment as Usual groups to represent an overall “Control” group, then there would be two groups to compare: Supported Employment versus Control. What would be the appropriate statistic to address the difference in hours worked between the two groups? Provide a rationale for your answer.

RESEARCH DESIGNS APPROPRIATE FOR THE ONE-WAY ANOVA Research designs that may utilize the one-way ANOVA include the randomized experi- mental, quasi-experimental, and comparative designs (Gliner, Morgan, 8 Leech, 2009). The independent variable (the "grouping" variable for the ANOVA) may be active or attri- butional. An active independent variable refers to an intervention, treatment, or program. An attributional independent variable refers to a characteristic of the participant, such as gender, diagnosis, or ethnicity. The ANOVA can compare two groups or more. In the case of a two-group design, the researcher can either select an independent samples t-test or a one-way ANOVA to answer the research question. The results will always yield the same conclusion, regardless of which test is computed; however, when examining differences between more than two groups, the one-way ANOVA is the preferred statistical test. Example 1: A researcher conducts a randomized experimental study wherein she ran domizes participants to receive a high-dosage weight loss pill, a low-dosage weight loss pill, or a placebo. She assesses the number of pounds lost from baseline to post-treatment

Explanation / Answer

8. based on the given information the probability value (0.002) is less than the level of siginificance(0.05). therefore we accept the alternavtive hypothesis i.e there is a significant difference among three groups.

9. As should be apparent from the foregoing discussion, there are substantial differences among post hoc procedures. The procedures differ in the amount and kind of adjustment to alpha provided. The impact of these differences can be seen in the table of critical values.

10. the test statistic to address the difference in hours worked between the groups is Fstatistic

F = MEAN SQAURE BETWEEN GROUPS/MEAN SQUARE ERROR.

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