Multiple choice six-sigma green-belt

A strong positive relationship exists when correlation coefficient r is

  1. 0

  2. 1

  3. Infinity

  4. -1
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correlation coefficient r ranges from -1 to +1, where +1 represents a perfect positive linear relationship between two variables. When r = 1, all data points fall exactly on an upward-sloping line. A value of 0 indicates no linear relationship, while -1 indicates a perfect negative relationship.

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