Statistics & Research Methods-Inferential Statistics (CBSE-NET (UGC) Psychology (Paper-II & Paper-III)): Questions 56 - 60 of 67

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Question number: 56

» Statistics & Research Methods » Inferential Statistics

MCQ▾

Question

A ________ shows that decreases are accompanied by increases.

Choices

Choice (4) Response
a.

Positive correlation

b.

Negative correlation

c.

Positive correlation and Negative correlation both

d. None of the above

Question number: 57

» Statistics & Research Methods » Inferential Statistics

Appeared in Year: 2014

MCQ▾

Question

What would be the degrees of freedom for a chi-square based on 4 5 contingency table?

(June)

Choices

Choice (4) Response
a.

9

b.

5

c.

20

d.

12

Question number: 58

» Statistics & Research Methods » Inferential Statistics

MCQ▾

Question

A ________ finds the degrees of correlation, or relationship, between two existing traits, behaviors or events.

Choices

Choice (4) Response
a.

Factor analysis

b.

Correlational study

c.

Analysis of variance

d. Question does not provide sufficient data or is vague

Question number: 59

» Statistics & Research Methods » Inferential Statistics

Appeared in Year: 2015

MCQ▾

Question

A fifth test was added to an old established selection test battery of four tests. Two multiple correlations, one between a suitable external criterion and three tests of the old battery, and the other between the same criterion and four tests of the new battery were computed. The significant change is R 2 would provide an evidence for the:

Choices

Choice (4) Response
a.

Predictive validity of the old battery

b.

Incremental validity of the fifth test

c.

Predictive validity of the new battery

d.

Concurrent validity of the fifth test

Passage

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 item-remainder correlations. Item analysis retained sixty items. To examine internal consistency among the items, inter-item correlations were inspected. Then the split-half 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: 60 (1 of 5 Based on Passage) Show Passage

» Statistics & Research Methods » Inferential Statistics

Appeared in Year: 2015

MCQ▾

Question

In the above context, which one of the following correlation should be computed to obtain item-remainder correlations? (December)

Choices

Choice (4) Response
a.

Tetrachoric correlation

b.

Phi-coefficient

c.

Rank difference correlation

d.

Point biserial correlation

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