Statistics & Research Methods (CBSENET (UGC) Psychology (PaperII & PaperIII)): Questions 138  140 of 162
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Question number: 138
» Statistics & Research Methods » Regression Analysis
Appeared in Year: 2015
Question
Which of the following statements are true about simple bivariate linear regression? (June)
(a) The b coefficient is a slope of the regression line.
(b) The b coefficient denotes change in Y, when X changes by 1 Unit.
(c) The error of prediction has a mean and variance of zero.
(d) If the b coefficient is significant, the product moment correlation between X and Y is also significant
Choices
Choice (4)  Response  

a.  a, b and d 

b.  c and d 

c.  a, b and c 

d.  a and b 

Question number: 139
» Statistics & Research Methods » ANOVA or F Test
Appeared in Year: 2015
Question
In a study, twenty – five subjects performed the same task under three conditions – relaxed, moderately stressed, and highly stressed. The suitable analysis of variance was carried out. The degree of freedom for the conditions X subjects interaction (used as an estimate of error variance) would be: (June)
Choices
Choice (4)  Response  

a.  48 

b.  24 

c.  72 

d.  74 

Question number: 140
» Statistics & Research Methods » Factor Analysis
Appeared in Year: 2015
Question
Which of the following statements are true about the principle components analysis? (June)
(a) Unities (values of 1) are retained in the diagonal spaces of the correlation matrix.
(b) The first principal component explains maximum variance.
(c) Principle components analysis follows common factor model.
(d) Principal components analysis yields oblique unrotated factors.
Choices
Choice (4)  Response  

a.  a and b 

b.  a and d 

c.  b and c 

d.  a, b and d 
