PSYC 510 HOMEWORK: CORRELATION AND REGRESSION ASSIGNMENT INSTRUCTIONS Part I: General Concepts These questions are based on the concepts covered in this module's assigned readings and presentations. You find a partial report of a study that investigated the relationship between self-esteem and depression. You see they conducted a one-tailed Pearon's r correlation with 52 people, and that the = -0.25. Answer the following questions based on this result. 1 . Calculate / report the following: (make sure to keep labels a, b, a. Coefficient of determination and c!) b. degrees of freedom a. ANSWER c. critical & value (use the ebook appendix b. ANSWER for the critical value and do not round). C. ANSWER 2. Write up the results using complete sentences. ANSWER Make sure to include the full statistical notation and a decision about the null hypothesis. 3. State what a researcher would conclude and what |ANSWER is actually true if a Type I error were committed in this scenario. (Note this requires two statements - 1) what the researcher concludes and 2) what is true for the population.) 4. Imagine a study finds a significant positive ANSWER relationship between IQ and SAT scores. If a journalist made an error in causality when writing about this relationship, what would they be claiming / concluding based on this scenario (one sentence is sufficient)? 5. State what a researcher would conclude and what |ANSWER is actually true if a Type II error were committed in regards to a correlational study on IQ and SAT scores. (Note this requires two statements - 1) what the researcher concludes and 2) what is true for the population.) Page I of 4PSYC 510 Scenario: A professor wants to examine whether being an athlete is associated with retention at their college. She finds that the research is contradictory - some research suggests it may improve retention but other research suggests it has no effect. She operationally defines athletic status as YES or NO, and retention as a self-report question (scale of 0 - 100% likelihood of coming back the next term). 6. What is the null hypothesis in this scenario (use a complete sentence)? Is it one- or two- ANSWER 7. What type of correlational analysis is most appropriate and why? ANSWER Part II: SPSS Application These questions require the use of SPSS. Remember you must submit all of your work within this word document. You will need to take a screen shot of your data view if necessary, or copy and paste your output into the spaces below. Remember to report the exact p value provided by SPSS output - simply reporting p<.05 or p>.05 is not acceptable (unless SPSS output states p=.000 - in that case you can report p<.001 a researcher wants to examine what impacts gia. in addition gpa she measures perceptions of the teacher perception class content motivation iq hours studied and final grade. was assessed using ranking scale low positive moderate or high perception. self reported as either with question you believe this course will help prepare for meaningful career is standardized that ranges from which higher scores indicating more motivation. average amount per week grade percent earned class. data set located current module titled regression spss page conduct pearson correlation determine whether there relationship between gpa. paste relevant output below. answer make sure indicate it one two-tailed if appropriate coefficient determination. linear see can predict based on write results. create an graph equation. part iii: cumulative these questions be related anything covered thus far describe variable would likely result positively skewed distribution. justify your rationale example numbers mean median mode. platykurtic making dispersion scores. are looking at exam they seem rather normally distributed except extremely score most measure central tendency where go within introduction find problem statement hypothesis beginning middle end m1 research methods presentation refresher jane believes developed new stress. how its construct validity give subject participant ch.>