Measurement and MethodologyStatistical Procedures (GRE (Graduate Record Examinations) Psychology): Questions 17  19 of 20
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Question number: 17
» Measurement and Methodology » Statistical Procedures
Question
A researcher has performed an experiment with a random sample. He wants to test his results for statistical significance and then draw conclusions about his population. He should use which of the following type of statistics?
Choices
Choice (4)  Response  

a.  Inferential statistics 

b.  Correlations 

c.  Referential statistics 

d.  Frequency distributions 

Question number: 18
» 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 (4)  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. 

Question number: 19
» 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 (4)  Response  

a.  moderate external validity and moderate reliability 

b.  low concurrent validity but high reliability 

c.  low internal validity but high external validity 

d.  high content validity but low reliability 
