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Final

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University of Guelph

Psychology

PSYC 2040

David Stanley

Fall

Description

Page 1 of 9
PSYC 2040
Sample Exam Questions
Weights for each section are approximate and may not reflect
the actual weights on your exam.
PART I [25 marks]
1) A ‘completely randomized factorial design’ implies that
a) data are collected for all possible combinations of levels of the independent
variables
b) a non-parametric test will be used
c) a within-subjects design will be used
d) no interaction terms are significant
e) there is only one independent variable
2) When performing an independent-samples t-test, you reject the null hypothesis if
a) the value of t is less than the ‘critical value’ shown in statistical tables
b) the mean of the second group is larger than the mean of the first group
c) the mean of the first group is larger than the mean of the second group
d) the probability of obtaining such a large value of t if the null hypothesis is true
is less than your chosen value of alpha
3) When performing a one-way independent groups analysis of variance it is
necessary to assume that the ____________ is the same at each level of the betw een-
subject factor.
a) Mean of the scores
b) Variance of the scores
c) Number of participants
d) Significance Page 2 of 9
PART II [50 marks]
A social psychologist was interested in determining if Americans gained weight over the Thanksgiving holiday season.
After conducting substantial research on the topic of weight gain he concluded that when the holiday season arrives
individuals often feel a cultural “license to sin” in that they can, because of the holidays, release themselves from their
normal caloric monitoring. That factor, combined with greater frequency of large meals, led him to hypothesize there
would be a weight gain over the holidays for both men and women.
He had a total of 10 participants (5 male, 5 female). Participants came into his lab 2 days before th e holiday seasons and
had their weight measured in pounds. Two days after the holiday season they returned to the lab and had their weight
measured again.
1) What type of test should be conducted?
2) Write a full and complete APA style results section based on the SPSS output. Be sure to describe (1) how men’s
weight changed over the holiday season and (2) how women’s weight changed over the holiday season.
Note: You may report SD instead of SE in this report. Sample PSYC 3320 Exam Questions
PSYC*2040 Exam: Part II SPSS Output
Within-Subjects
Factors
Measure: MEASURE_1
Time Dependent
Variable
1 T1
2 T2
Between-Subjects Factors
N
1.00 5
Gender
2.00 5
Descriptive Statistics
Gender Mean Std. Deviation N
1.00 180.0000 28.06243 5
T1 2.00 104.2000 9.17606 5
Total 142.1000 44.53575 10
1.00 190.8000 28.31431 5
T2 2.00 103.8000 7.36206 5
Total 147.3000 49.82871 10 Sample PSYC 3320 Exam Questions
Box's Test of Equality of Covariance
Matrices a
Box's M 6.514
F 1.583
df1 3
df2 11520.000
Sig. .191
Tests the null hypothesis that the
observed covariance matrices of the
dependent variables are equal across
groups.
a. Design: Intercept + Gender
Within Subjects Design: Time Sample PSYC 3320 Exam Questions
a
Multivariate Tests
Effect Value F Hypothesis df Error df Sig. Partial Eta
Squared
Pillai's Trace .750 24.036b 1.000 8.000 .001 .750
b
Wilks' Lambda .250 24.036 1.000 8.000 .001 .750
Time Hotelling's Trace 3.004 24.036b 1.000 8.000 .001 .750
b
Roy's Largest Root 3.004 24.036 1.000 8.000 .001 .750
Pillai's Trace .777 27.876b 1.000 8.000 .001 .777
b
Wilks' Lambda .223 27.876 1.000 8.000 .001 .777
Time * Gender Hotelling's Trace 3.484 27.876b 1.000 8.000 .001 .777
b
Roy's Largest Root 3.484 27.876 1.000 8.000 .001 .777
a. Design: Intercept + Gender
Within Subjects Design: Time
b. Exact statistic
Mauchly's Test of Sphericity a
Measure: MEASURE_1
Within Subjects Effect Mauchly's W Approx. Chi- df Sig.

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