STATISTICAL TECHNIQUES AND TOOLS
REGRESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A correlation coefficient ranges between-1 and 1.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -A correlation coefficient of zero indicates that no linear relationship exists between two continuous variables, and a correlation coefficient of −1 or +1 indicates a perfect linear relationship. The strength of relationship can be anywhere between −1 and +1.
Detailed explanation-2: -It is expressed as a positive ornegative number between-1 and 1. The value of the number indicates the strengthof the relationship: r = 0 means there is no correlation. r = 1 means there is perfect positive correlation. r =-1 means there is a perfect negative correlation.
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