Research Methods and Statistics [GATE (Graduate Aptitude Test in Engineering) Psychology]: Questions 62 - 65 of 320

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Question 62

Research Methods and Statistics
Assumptions

Appeared in Year: 2014 (UGC)

Question

MCQ▾

Which of the following statement/s is/are true about principal components analysis?

1. While computing, unities are retained in the diagonal spaces of correlation matrix.

2. The first principal component condenses maximum variance.

3. The subsequently extracted principal component is uncorrelated with the previously extracted principal component.

4. The principal components cannot be subjected to oblique rotation.

(June)

Choices

Choice (4)Response

a.

1 and 4 only

b.

2 and 3 only

c.

1 and 3 only

d.

1,2 and 3 only

Question 63

Research Methods and Statistics
Assumptions

Appeared in Year: 2014 (UGC)

Question

MCQ▾

What would be the degrees of freedom for the second-order interaction effect in a 3 × 3 × 2 factorial design? (December)

Choices

Choice (4)Response

a.

9

b.

4

c.

2

d.

18

Question 64

Research Methods and Statistics
Measures of Central Tendency and Dispersion

Question

MCQ▾

Which is NOT a type of standard score?

Choices

Choice (4)Response

a.

A deviation IQ.

b.

A stanine.

c.

A J score.

d.

A T score.

Passage

A researcher wanted to study the effect of a specific drug on the activity of rats. He suspected if the effect of the drug is moderated by temperature. He varied drug dosage (A) at three levels-no drug (placebo) , low drug dosage (5 mg/kg body-weight) and high drug dosage (10 mg/kg bodyweight) . He varied temperature (B) at two levels – 25 degree Celsius and 39 degree Celsius. Fifteen rats were randomly assigned to each of the six groups. The activity scores for each rate were obtained through activity wheel. The cell means and standard deviations for activity scores were obtained for the six cells. All the cells had comparable standard deviations. A suitable analysis of variance was carried out using the activity scores as the dependent variable. One of the interesting finding in this research was that the F ratio defined as ‘MSA B/MSE’ was statistically significant at . 01 level.

(June 2014)

Question 65 (1 of 4 Based on Passage)

Research Methods and Statistics
ANOVA [One-Way, Factorial]

Question

MCQ▾

From the significant F ratio, ‘MSA B/MSE’ , it can be inferred that

Choices

Choice (4)Response

a.

the main effect of drug dosage is significant

b.

the main effect of temperature is significant

c.

the effect of drug dosage is moderated by temperature

d.

the main effect of drug dosage, the main effect of temperature, and the interaction effect of the two, all are significant.

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