Question

If two attributes A and B have perfect positive association the value of coefficient of association is equal to:

Select one:

a. 0

b. (r-1)(c-1)

c. -1

d. +1​

Answer 1

Answer:

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Answer 2

The correct answer is option (d.) +1

Explanation:

• If two attributes A and B have perfect positive association the value of coefficient of association is equal to +1.
• Statistically, two attributes are associated if they occur together in a greater number of cases than expected had they been independent.
• Two attributes A and B are said to be completely associated if A cannot occur without B, though B may occur without A and vice-versa.
• In other words, A and B are completely associated if all A's are B's i.e. (AB) = (A) or all B's are A's i.e. (AB) = (B), according as whether either A's or B's are in a minority.