Discussion
A correlation coefficient of zero indicates :
Answer: A
A correlation coefficient of zero indicates a non-existent relationship (no linear relationship).
The coefficient r ranges from -1 to +1. Values near +1 or -1 show a strong positive or negative linear relationship, and r = 0 shows that the two variables have no linear association at all.
'Existent' and 'direct' relationships require a non-zero coefficient, a direct relationship being a positive one. 'Neutral' is not a term used to interpret correlation coefficients. Strictly, zero rules out only a linear relationship, but at this level it is read as no relationship.
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