PRC-2 · Chapter 10 · Question 46 of 60
Which of the following correctly defines the exact mathematical range within which the Pearson correlation coefficient (r) must always lie?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) -1 to +1
Explanation
The correlation coefficient (r) measures the strength and direction of a linear relationship. It is mathematically bounded and can never exceed +1 (perfect positive correlation) nor drop below -1 (perfect negative correlation).
More Correlation and Regression MCQs
- Q48If a researcher adds a constant of 12 to every observation of variable X, and divides every observation of variable Y by 3, what will…
- Q49In a formulated linear regression equation represented as Y = 500 - 6.5X, what does the value '-6.5' specifically represent?
- Q50If variable X and variable Y exhibit a 'perfect negative correlation', what must be the exact mathematical value of r?
- Q51If the calculated correlation coefficient between variables X and Y is exactly 0.00, what visual pattern would their scatter diagram most…
- Q52A regression line of Y on X must mathematically always pass perfectly through which specific coordinate point on a scatter diagram?