Paper 1 · Research Aptitude
UGC NET December 2023 (08.12.2023) Shift-I
Given below are two statements. In the light of the above statements, choose the most appropriate answer from the options given below.
- Statement I: Spearman's rho is generally employed to measure the strength and direction of the relationship between two ordinal variables.
- Statement II: Pearson's coefficient of correlation r is very useful when the relationship between two variables is curvilinear.
ABoth Statement I and Statement II are correct
BBoth Statement I and Statement II are incorrect
CStatement I is correct but Statement II is incorrect ✓ Correct
DStatement I is incorrect but Statement II is correct
Correct answer: (C) Statement I is correct but Statement II is incorrect — Statement I is correct but Statement II is incorrect, so that is the answer.
Explanation
★Statement I is correct but Statement II is incorrect, so that is the answer.
★Spearman's rho measures the relationship between ranked, or ordinal, variables.
★It captures the strength and direction of that association, so Statement I is correct.
★Pearson's r measures the strength of a linear relationship between two variables.
★It is not suitable when the relationship is curvilinear.
★So the claim that Pearson's r suits curvilinear relationships is wrong, making Statement II incorrect.
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