Exploring the Logic of Experimental Design
Jackson Chapter Exercises
#2. Based on the health magazine depression study, it seems there are double confounds
that might have affected the study and the observed outcomes. Given the length of the
study, histor

FREQUENCIES VARIABLES=Experience
/STATISTICS=STDDEV MEAN MEDIAN MODE
/ORDER=ANALYSIS.
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Missing Value Handling
Syntax
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17-OCT-2016 19:24:29
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Users/McGuire/Desktop/NC
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Problem Set Week 2: Chapters 1 & 2
Chapter 1: Complete the EVEN numbers problems listed below; the problem set begins on page
34 in Gravetter and Wallnau (2013). The answers to the odd numbered problems are in the back
of the book for additional practice.

Experimental Designs I
Jackson (2012) Chapter Exercises
#2. A randomized ANOVA indicates an analysis of variance conducted on data where the
subjects were randomly selected for a between-subjects design. A repeated-measures ANOVA is
an analysis of varianc

Jackson (2012) Chapter Exercises
#2. A 4 x 6 factorial design has two independent variables; the first with four levels and
the second with six. A 4 x 6 factorial design has 24 conditions.
#4. A cell mean represents the average score of participants in a

How does a covariate reduce noise? A covariate is a variable that is adjusted in a study
so as to remove its affect on the independent variable. This adjustment is done statistically. By
removing the affect of the covariate, the effect of the independent

accounting for approximately 37.5% of the variance, is significant at the p < .01 level. In
the third study there is no significant interaction effect between factors A and B and the only
significant main effect was factor B, accounting for approximately

Quasi-experimental Design
Jackson (2012) Chapter Exercises
#2. The psychology professor has two sections of students that were not randomly
assigned. The treatment will be weekly quizzes. The desired outcome is improved student
learning. I will assume tha

Experimental Designs II
Jackson (2012) Chapter Exercises
#2. A 4 x 6 factorial design has two independent variables; the first with four levels and
the second with six. A 4 x 6 factorial design has 24 conditions.
#4. A cell mean represents the average sco

Jackson (2012) Chapter Exercises
#2a. This is a one-tailed test. We are interested in the product preventing cavities.
2b. H0: new TP oth; Ha: new TP < oth
#2c. Zobt = (M SDs) / SDM (1.73 1.5) / 1.12 = 0.23 / 1.12 = 0.205
#2d. Zcv = 1.645
#2e. H0 should n

Jackson (2012) Chapter Exercises
#2. A 4 x 6 factorial design ideally involves two independent variables; the first has four
levels and the second with six. Furthermore, a 4 x 6 factorial design has 24 conditions.
#4. A cell mean in this context represent

GET
FILE='/Users/McGuire/Desktop/NCU /Course 7/Week 2/Teacher_Survey3.sav'.
DATASET NAME DataSet1 WINDOW=FRONT.
FREQUENCIES VARIABLES=Age
/STATISTICS=STDDEV MEAN MEDIAN MODE
/ORDER=ANALYSIS.
Frequencies
Notes
Output Created
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Input
Missing Value Ha