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Correlation Coefficients MCQs for Competitive Exams

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Correlation Coefficients MCQs for Competitive Exams

Practice with answers, explanations, and exam-focused revision notes.

31 MCQs Page 1

Topic Notes: Correlation Coefficients

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Quick Overview

Correlation Coefficients MCQs in Statistics are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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1
What is the correlation coefficient (r) between two variables u = x and y = -x?
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2
Which of the following values cannot represent a valid coefficient of correlation?
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3
Given a coefficient of determination (R-squared) of 0.81, what can be inferred about the correlation coefficient (r)?
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4
How does the correlation coefficient behave regarding the origin and the unit of measurement of the variables?
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5
If the coefficient of determination (R-squared) is exactly 1, what can be concluded about the correlation coefficient (r)?
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6
Given the regression coefficients bxy = -0.8 and byx = 1.2, what is the value of the correlation coefficient r?
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7
What is the relationship between the signs of the regression coefficients and the correlation coefficient?
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8
If two random variables X and Y are statistically independent, what is the value of their correlation coefficient?
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9
If two variables, X and Y, exhibit a strong linear correlation, what conclusion can be drawn regarding their causal relationship?
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10
What are the mathematical bounds of the correlation coefficient?
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