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PSYC 515 SPSS M1 1
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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 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 assignment is worth 60 points. Each question is worth 3 content points. Six (6) points are
assigned to format. 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 of “format” points.
• 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
X
1
(before)
X
2
(after)
A
15
15
B
11
13
C
10
18
D
11
12
E
14
16
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?
PSYC 515 SPSS M1 2
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Thei Independenti variablei isi thei commerciali thati isi beingi showni andi iti isi consideredi ai withini subjectsi becausei
thei samei individualsi werei testedi beforei andi afteri watchingi thei commerciali toi determinei thei attitudei scale.Twoi
leveli becausei iti isi measuringi attitudei beforei andi afteri viewingi thei TVi commercial.
2. In this specific scenario, what is the dependent variable? What is its scale of measurement (nominal,
ordinal, or scale)?
Theii i dependentii i variableii i isii i theii i attitudeii i scaleii i beingii i measuredii i fromii i 0-20ii i beforeii i andii i afterii i theii i
commercial.ii i Theii i scaleii i ofii i measurementii i isii i scale.
3. Paste all relevant statistical output in the space provided below:
4. Create an appropriate graph in SPSS and paste it in the space provided below: