# Statistics & Research Methods-T Tests [NTA-NET (Based on NTA-UGC) Psychology (Paper-II)]: Questions 1 - 5 of 9

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## Question 1

Appeared in Year: *2014*

### Question

MCQ▾On a Wechsler type intelligence scale Arish has a deviation IQ of 115. If the norms of this test are expressed in terms of normalized T scores (mean = 50, SD = 10) , what would be the T score of Arish? (December)

### Choices

Choice (4) | Response | |
---|---|---|

a. | 65 | |

b. | 84 | |

c. | 60 | |

d. | 40 |

## Question 2

Appeared in Year: *2015*

### Question

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 t^{2} = F.

### Choices

Choice (4) | Response | |
---|---|---|

a. | Ꭺ is false but Ꭱ is true | |

b. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |

c. | Ꭺ is true but Ꭱ is false | |

d. | Both Ꭺ and Ꭱ are false |

### Passage

Read the following paragraph and answer the five questions which follow:

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 P_{27} and P_{73} 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 3 (1 of 2 Based on Passage)

Appeared in Year: *2017*

### Question

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

### Choices

Choice (4) | Response | |
---|---|---|

a. | 60 | |

b. | 68 | |

c. | 75 | |

d. | 84 |

## Question 4 (2 of 2 Based on Passage)

Appeared in Year: *2017*

### Question

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

### Choices

Choice (4) | Response | |
---|---|---|

a. | 115 | |

b. | 68 | |

c. | 80 | |

d. | 85 |

## Question 5

Appeared in Year: *2018*

### Question

MCQ▾In matched two-group design with 30 subjects per group, the ‘t’ test would be based on ________ degrees of freedom. (18^{th} December 2^{th} Shift)

### Choices

Choice (4) | Response | |
---|---|---|

a. | 59 | |

b. | 30 | |

c. | 29 | |

d. | 58 |