Discussion
Which one of the following values of correlation coefficient (r) is not correctly matched degree of relationship ?
Answer: D
A correlation coefficient of +0.99 shows a very high positive relationship, +0.50 a moderate one and -0.01 a very low (almost no) relationship. A coefficient of -0.99 is a very strong negative correlation, not no relationship, so the pair - 0.99 and Nil is wrongly matched. The nil degree of relationship is shown by a value close to zero, so this is the answer to the question asking which is not correctly matched. The sign of the coefficient gives the direction and its size gives the degree, so a large negative value is a high degree of negative correlation.
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