Measurement and MethodologyStatistical Procedures (GRE (Graduate Record Examinations) Psychology): Questions 13  16 of 20
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Question number: 13
» 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: 14
» Measurement and Methodology » Statistical Procedures
Question
Which of the following is NOT true of the Chi Square statistic?
Choices
Choice (4)  Response  

a.  It should be used with nominal data. 

b.  It is a parametric test. 

c.  It is based on expected frequencies. 

d.  It does not assume that the variance between two groups is equal. 

Question number: 15
» Measurement and Methodology » Statistical Procedures
Question
The members of a sample who deviate from the mean by a standard deviation expressed as a Zscore of 3 represent
Choices
Choice (4)  Response  

a.  members of the sample who are most likely to appear six times more frequently than other members of the sample 

b.  the most frequent twothirds of the sample 

c.  the most frequent third of the sample 

d.  outliers 

Question number: 16
» Measurement and Methodology » Statistical Procedures
Question
A normal distribution of 2000 scores has a mean of 150 and a standard deviation of 6. Jenny received a 162. Each of the following is true of her score EXCEPT
Choices
Choice (4)  Response  

a.  her score is equivalent to a zscore of + 2 

b.  approximately 48 % of the total scores lie between her score and the mean 

c.  approximately 68 % of student scored lower than she did 

d.  her percentile rank is approximately the 98^{th} percentile 
