PSYC 515 SPSS M1 REVIEW SPSS WORKSHEET INSTRUCTIONS Answered 2024/2025 Verified .
HOMEWORK: REVIEW SPSS WORKSHEET INSTRUCTIONS
OVERVIEW
This worksheet is designed to assess your ability to perform, interpret, report, and graphically represent the following statistical tests using SPSS and st...
OVERVIEW
This worksheet is designed to assess your ability to perform, interpret, report, and graphically
represent the following statistical tests using SPSS and standard reporting conventions as
covered in this course: correlations, regression, independent samples t tests, and correlated
groups t tests. These are standard tests in our field and are foundational to the more sophisticated
research designs. Knowledge of these tests provide fundamental skills to critically evaluating and
producing research in one’s field.
INSTRUCTIONS
Be sure you have reviewed this module’s assigned readings and presentations before completing
this assignment. This includes using ensuring the homework is completed and submitted
according to the instructions, SPSS output and images are legible and relevant, and that basic
college level writing skills (e.g., grammar) are used in the write-ups. Answers should be placed
where indicated (e.g., “ANSWER”). Note: all questions must be attempted to be eligible for full
credit. Please note that for all problems in this course, the standard cut-off (alpha) for a test of
significance will be .05, and you always report the exact power unless SPSS output states p=.000
(you’d report p<.001). Also, remember that we divide the p-value in half when reporting one-
tailed tests with 1 – 2 groups. Also – remember to check your graphs! You often have to ADD
the y – axis title.
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: SPSS1_JohnDoe_515B01
Scenario 1
A major university would like to improve its tarnished image following a large on-campus
scandal. Its marketing department develops a short television commercial and tests it on a
sample of n = 10, the first ten students who entered a housing commons area who agreed to
participate. Attitudes about the university are measured with a short questionnaire, both before
and after viewing the commercial. Attitudes were on a scale of 0 – 20, which higher numbers
reflecting better attitudes. Use the provided data to examine whether the commercial improved
the university’s image. The data are as follows:
Person X1 (before) X2 (after)
A 15 15
B 11 13
C 10 18
D 11 12
E 14 16
Page 1 of 9
, PSYC 515
F 10 10
G 11 19
H 10 20
I 12 13
J 15 18
1. In this specific scenario, what is the independent variable? Is it between or within
subjects? How many levels does it have, and what are they?
ANSWER
The independent variable is the commercial variable that is being displayed. It is considered
within subjects because the same indivduals were tested before and afer watching the
commercial to determine the attitude scale. It contains two levels because it measures the
attitude before and after the TV commercial.
2. In this specific scenario, what is the dependent variable? What is its scale of
measurement (nominal, ordinal, or scale)?
ANSWERThe depedendent variable is the attitude scale being measured from 0 to 20 before
and after the TV commercial. The scale of measurement is scale.
3. Paste all relevant statistical output in the space provided below:
ANSWER
Page 2 of 9
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