Statistics & Research Methods (CBSENET (UGC) Psychology (PaperII & PaperIII)): Questions 146  150 of 161
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A psychometrician wanted to develop a new test of Abstract Thinking. He prepared eighty items, presumably assessing abstract thinking. Each item had five alternatives answers, one of them being correct. The psychometrician carried out item analysis by using itemremainder correlations. Item analysis retained sixty items. To examine internal consistency among the items, interitem correlations were inspected. Then the splithalf reliability coefficient, Kuder  Richardson reliability coefficient, and Cronbach’s alpha coefficient were obtained for the sixty item test. The analysis yielded the Cronbach’s alpha coefficient of 0.90. Since the test was fairly long and the alpha coefficient was also quite high, an attempt was made to develop two short versions of equal length by randomly dividing the test items. The 60 item version was, then, correlated with the already established abstract reasoning test, using N = 500. The correlation between the new and an established test was 0.24, significant at. 01 level.
Question number: 146 (3 of 5 Based on Passage) Show Passage
» Statistics & Research Methods » Inferential Statistics
Appeared in Year: 2015
Question
To obtain interitem correlations, which one of the following correlation coefficient should be used in the above analysis? (December)
Choices
Choice (4)  Response  

a.  Biserial correlation 

b.  phicoefficient 

c.  Point biserial correlation 

d.  Rank difference correlation 

Question number: 147 (4 of 5 Based on Passage) Show Passage
» Statistics & Research Methods » Inferential Statistics
Appeared in Year: 2015
Question
What is the expected Cronbach alpha for the short versions, referred to in the paragraph? (December)
Choices
Choice (4)  Response  

a.  0.82 

b.  0.67 

c.  0.90 

d.  0.45 

Question number: 148 (5 of 5 Based on Passage) Show Passage
» Statistics & Research Methods » Inferential Statistics
Appeared in Year: 2015
Question
In the above context, which one of the following correlation should be computed to obtain itemremainder correlations? (December)
Choices
Choice (4)  Response  

a.  Tetrachoric correlation 

b.  Phicoefficient 

c.  Rank difference correlation 

d.  Point biserial correlation 

Question number: 149
» Statistics & Research Methods » Basic Descriptive Statistics
Appeared in Year: 2015
Assertion (Ꭺ)
A tree shall appear in same perceived size whether one views it from near or far point. (December)
Reason (Ꭱ)
The size of retinal image remains invariant.
Choices
Choice (4)  Response  

a.  Both Ꭺ and Ꭱ are false 

b.  Ꭺ is true but Ꭱ is false 

c.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 

d.  Ꭺ is false but Ꭱ is true 

Question number: 150
» Statistics & Research Methods » Common Statistical Tests in Psychology
Appeared in Year: 2015
Question
Match List  I with List  II arid select the correct answer by choosing from codes given below:ListⅠ (Name Of The Rating Scale)  ListⅡ (Related Used Of Scale) 

(A) Individual ranking  (i) Evaluation method where employ are ranked from best to worst 
(B) Graphic rating scales  (ii) Evaluator rates actual job related behavior along a continuum. 
(C) Behaviorally anchored rating Scales  (iii) Evaluator rates employees on classification of some qualities. 
(D) Group order ranking  (iv) Evaluator rates performance factors on an incremental basis. 
Choices
Choice (4)  Response  

 
a. 


b. 


c. 


d. 

