Use the study information and SPSS output file provided to answer the questions listed.

Use the study information and SPSS output file provided to answer the questions listed.

Study Description: Participants were assigned to a control group or a training group. The training group received 1 hour of training every day for one week. During the training, participants learned various techniques for decreasing their stress levels. All participants were given a life stress test to determine their current level of life stress. Scores on the test were labeled as either high or low. After a week, all participants were given a puzzle to put together in a stressful environment (e.g., loud noises, bright lights, etc.). The amount of the puzzle completed in the time frame of 5 minutes was measured according to the number of pieces completed (there were 10 pieces to the puzzle). It was expected that the training group would have different scores on the test than the control group. In addition, those who had high life stress scores were expected to perform differently than those who had low life stress scores. Lastly, those who received training and had high stress scores were expected to perform differently than those who did not receive training and had low stress score

Questions to answer:
? Research Question ?
List the research question for the study.

List the statistical notation and written explanations for the null and alternative hypotheses for the study.

? Identify the variables and each of their attributes: discrete or continuous, quantitative or categorical, scale of measurement (nominal, ordinal, interval, or ratio), and independent or dependent.

? Write an overview of the descriptive statistics (1 paragraph), including the appropriate and necessary statistical results

o How many individuals participated in the study?

o How do the measures of central tendency and variability provide us with an overview of the characteristics and shape of the distribution for interval and ratio variables?
What are these statistics?
Why should we ignore and not report these measures for nominal and ordinal variables
o What type of ANOVA was conducted? Why?

o Should a post-hoc test have been conducted? Why or why not?
If so, what were the results of this test?

o How can the interaction be interpreted based on the statistical results and interaction graph?

o What do the results tell us about our hypotheses?

o What conclusions can we draw from these results?

What conclusions can we NOT make using these results?

 
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