Statistics & Research Methods (CBSE-NET (UGC) Psychology (Paper-II & Paper-III)): Questions 138 - 140 of 165

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Question number: 138

» Statistics & Research Methods » Regression Analysis

Appeared in Year: 2015

MCQ▾

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

MCQ▾

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

MCQ▾

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

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