# Statistics Question

PSYC 510HOMEWORK: CORRELATION AND REGRESSION ASSIGNMENT INSTRUCTIONS
OVERVIEW
This Homework: Correlation & Regression Assignment is designed to assess your
understanding of the concepts and applications covered thus far in this course. In this moduele,
you have looked at the second goal of science – prediction, which aligns with our second most
powerful research method – correlations and regression. These concepts, SPSS applications, and
how to present conclusions in APA format will further develop your ability to understand and
evaluate data as a consumer in a data-laden world as well as within our field. It also assesses
your ability to analyze and present predictive research in the field of psychology.
INSTRUCTIONS
Be sure you have reviewed this module’s Learn section before completing this Homework:
Correlation & Regression Assignment. This Homework: Correlation & Regression
Assignment is worth 60 points. All questions are worth 3 points each. Six points are awarded for
mechanics/structure.

Part I contains general concepts from this module’s assigned readings and presentations.
Part II requires use of SPSS. You will have to take screen shots and/or copy and paste from
your SPSS to place answers within this file. Make sure you only insert relevant and legible
images.
Part III is the cumulative section. These may include short answer and/or use of SPSS but
will review material from previous module(s).
Directions for each subsection are provided in the top of each table (in the gray shaded
Submit the file as a WORD document (.doc or .docx). Make sure the filename of your
submission includes your full name, course and section.
o Example: HW5_JohnDoe_510B01
Make sure to check the Homework Grading Rubric before you begin this Homework:
Correlation & Regression Assignment.
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
r = -0.25. Answer the following questions based on this result.
1.
Calculate / report the following:
a. Coefficient of determination
b. degrees of freedom
(make sure to keep labels a, b, and c!)
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PSYC 510
2.
3.
4.
5.
c. critical r value (use the ebook appendix for the
critical value and do not round).
Write up the results using complete sentences. Make
sure to include the full statistical notation and a
State what a researcher would conclude and what 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.)
Imagine a study finds a significant positive
relationship between IQ and SAT scores. If a
journalist made an error in causality when writing
concluding based on this scenario (one sentence is
sufficient)?
State what a researcher would conclude and what 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.)
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-tailed?
7.
What type of correlational analysis is most appropriate and why?
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
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PSYC 510
exact p value provided by SPSS output – simply reporting p.05 is not acceptable
(unless SPSS output states p=.000 – in that case you can report p

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