Measurement and Methodology (GRE (Graduate Record Examinations) Psychology): Questions 81  83 of 92
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Question number: 81
» Measurement and Methodology » Statistical Procedures
Question
An analysis of variance is more appropriate than multiple t tests when analyzing data from multiple group experiments because ________.
Choices
Choice (5)  Response  

a.  The possibility of rejecting a null hypothesis that is true is more likely using an analysis of variance. 

b.  Doing many t tests increases the chances of Type 2 error. 

c.  Multiple t tests in one experiment increase the chance of a Type 1 error. 

d.  Significant effects are more likely to be found with an analysis of variance. 

e.  Question does not provide sufficient data or is vague 

Question number: 82
» Measurement and Methodology » Statistical Procedures
Question
The Acme Scale of Aggression has a + 0.10 correlation with four other standardized aggression scales. Also, a correlation of + 1.00 exists between the scores of any student who takes the Acme Scale of Aggression twice. This indicates that the Acme Scale of Aggression has
Choices
Choice (5)  Response  

a.  low face validity but high reliability 

b.  low internal validity but high external validity 

c.  low concurrent validity but high reliability 

d.  moderate external validity and moderate reliability 

e.  high content validity but low reliability 

Question number: 83
» Measurement and Methodology » Statistical Procedures
Question
A researcher wants to consider the effects of preparation on standardized test scores. She plans to compare the GRE scores of students who did and did not take a preparation course for the GRE. She also plans to compare the GRE scores of students who took preparation courses though Company X, Company Y, and Company Z.
The researchers found that students who took a preparation course with Companies X and Y scored higher on the GRE than students who did not prepare. But students who took a preparation course with Company Z scored no higher on average than students who did not take a preparation course. These results are an example of
A negative correlation
Choices
Choice (5)  Response  

a.  a flat effect 

b.  a main effect 

c.  an interaction effect 

d.  a zero correlation 

e.  Question does not provide sufficient data or is vague 
