Measurement and Methodology (GRE Psychology): Questions 46  49 of 88
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Question number: 46
» Measurement and Methodology » Statistical Procedures
Question
Which of the following statistical tests should the researcher use to analyze her data?
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.
Choices
Choice (4)  Response  

a.  2 x 3 factor analysis 

b.  2 x 2 x 2 factor analysis 

c.  Ttest 

d.  Chisquare test 

Question number: 47
» Measurement and Methodology » Psychometrics, Test Construction, Reliability, Validity
Question
A test that is valid must
Choices
Choice (4)  Response  

a.  predict future behavior 

b.  be reliable 

c.  have scores that fit a normal curve 

d.  be normed on a random sample 

Question number: 48
» Measurement and Methodology » Statistical Procedures
Question
Which of the following best describes the graph above?
Choices
Choice (4)  Response  

a.  Frequency polygon 

b.  Negatively skewed distribution 

c.  Histogram 

d.  Normal distribution 

Question number: 49
» Measurement and Methodology » Psychometrics, Test Construction, Reliability, Validity
Question
Coefficient alpha is conceptually
Choices
Choice (4)  Response  

a.  estimate of intersorer reliability is most flexible 

b.  the standard deviation of all possible sources of variation. 

c.  the estimate of interscorer reliability that is most robust. 

d.  the mean of all possible splithalf correlations. 
