# Statistics & Research Methods (CBSE-NET (UGC) Psychology (Paper-II & Paper-III)): Questions 51 - 55 of 167

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## Question number: 51

» Statistics & Research Methods » Inferential Statistics

Appeared in Year: 2013

MCQ▾

### Question

In a single group pretest- post test design, which one of the statistical method can be best employed to evaluate the mean difference of pre and post tests? (December)

### Choices

Choice (4) Response

a.

Mann- Whitney U test

b.

Chi-square

c.

Repeated measures ANOVA

d.

Randomized ANOVA

## Question number: 52

» Statistics & Research Methods » Measures of Variation

MCQ▾

### Question

Distributions may vary in terms of their

### Choices

Choice (4) Response

a.

skewness.

b.

kurtosis.

c.

variability.

d.

All a. , b. and c. are correct

## Question number: 53

» Statistics & Research Methods » Factor Analysis

Appeared in Year: 2014

Assertion-Reason▾

### Assertion (Ꭺ)

Promax-rotated factors cannot be subjected to higher-order factor analysis.

### Reason (Ꭱ)

Promax rotation results in oblique factors.

### 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 and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

## Passage

Instructions for the questions below. Read the following paragraph and answer the five questions that follow:

An anxiety researcher, working in the interaction model of anxiety, wanted to factor analyzes anxiety-producing situations. He had a hunch that anxiety-producing situations would broadly belong to two categories - inter-personal-evaluative and physically-threatening. His tool, assessing situation-specific anxiety, had 14 situations. For each situation, the subject was required to indicate on 11 five-point rating scales as to how he or she would respond in that situation. Thus for each situation scale, the minimum score would be 11 and the maximum score would be 55. The correlation matrix among the 14 situation scales was formed. Two factor analyses were carried out on this correlation matrix. In the first factor analysis, unities were retained in the diagonal spaces of the correlation matrix and the un-rotated factors were extracted. Using Cattell’s scree plot, three factors were retained for rotation. The rotated factors had - small or moderate inter-factor correlations. In the second factor analysis, appropriate communality estimates were inserted in the diagonal spaces of the correlation matrix and the three factors were rotated using the same rotation method, used in the same factor analysis.

## Question number: 54 (1 of 5 Based on Passage) Show Passage

» Statistics & Research Methods » Factor Analysis

Appeared in Year: 2014

MCQ▾

### Question

Which one of the following statement is true? (December)

### Choices

Choice (4) Response

a.

The first factor analysis used common factor model; the second factor analysis used principal component model.

b.

The first factor analysis used component model; the second factor analysis used common factor model.

c.

Question does not provide sufficient data or is vague

d.

None of the above

## Question number: 55 (2 of 5 Based on Passage) Show Passage

» Statistics & Research Methods » Factor Analysis

Appeared in Year: 2014

MCQ▾

### Question

Cattell’s scree plot is a (December)

### Choices

Choice (4) Response

a.

Plot of the order of the factors on X axes and the factor loading on Y axis.

b.

Plot of the order of Eigen values on X axis and the actual Eigen values of the reduced correlation matrix on Y axis.

c.

Plot of the order of Eigen values on X axis and the actual Eigen values of the unreduced correlation matrix on Y axis.

d.

Plot displaying variables using the first two factor as axes.

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