Paper 1 · Research Aptitude
We use factor analysis
ATo test a single directional hypothesis
BTo compare the means of two groups
CTo find one simple correlation between two variables
DTo study the interrelationships among many variables and reduce them to factors ✓ Correct
Correct answer: (D) To study the interrelationships among many variables and reduce them to factors — We use factor analysis to study the interrelationships among many variables and reduce them to factors, so that is the answer.
Explanation
★We use factor analysis to study the interrelationships among many variables and reduce them to factors, so that is the answer.
★Factor analysis works on a large set of variables at once.
★So it uncovers the interrelationships among them and reduces them to a few underlying factors.
★It is not used just to test one directional hypothesis, a narrower task.
★It is not for comparing the means of two groups, which a t-test does.
★It is not a single correlation between two variables, so factor analysis reduces many variables to factors.
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