# Statistics & Research Methods-T Tests (CBSE-NET (UGC) Psychology (Paper-II & Paper-III)): Questions 1 - 3 of 3

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## Question number: 1

» Statistics & Research Methods » T Tests

Appeared in Year: 2015

Assertion-Reason▾

### Assertion (Ꭺ)

In the randomized two – group design, if the mean difference between the two groups in analysed both by t and F tests, F is always larges then t. (June)

### Reason (Ꭱ)

In the randomized two group design, the t2 = F.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are false

## Passage

A researcher working in the area of human intelligence wanted to develop a new verbal test of intelligence. For this purpose, he wrote 200 objective multiple-choice items. Each item had four alternatives, one of which was right and the three remaining ones were wrong. He administered this initial version to a sample of 400 subjects. Using P27 and P73 as the cut-off points, he obtained two groups – Low Scoring and high scoring respectively. The item difficulty index and the item discrimination index were computed for 200 items. To assess whether each item significantly discriminates between Low scoring and High scoring groups, appropriate statistical significance tests were also employed. This item analysis process retained 150 items. The final version of 150 items was administered to a fresh sample of 750 subjects. The appropriate measures of internal consistency reliability were obtained. The test norms were developed using normalized T scores (mean = 100, SD = 20) and the Wechsler type deviation IQ scores. To assess the dimensionality of verbal intelligence, the researcher also carried out the factor analysis of item scores.

## Question number: 2 (1 of 2 Based on Passage) Show Passage

» Statistics & Research Methods » T Tests

Appeared in Year: 2017

MCQ▾

### Question

For the above test, what is the expected percentile rank for the T score of 120? (January)

### Choices

Choice (4) Response

a.

75

b.

60

c.

84

d.

68

## Question number: 3 (2 of 2 Based on Passage) Show Passage

» Statistics & Research Methods » T Tests

Appeared in Year: 2017

MCQ▾

### Question

For the above test, a T score of 80 correspond to the deviation IQ of (January)

### Choices

Choice (4) Response

a.

85

b.

115

c.

68

d.

80

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