Question 1 (3 points) For all three parts, please answer %u201Ctrue%u201D or %u2

Question

Question 1     (3 points)

For all three parts, please answer %u201Ctrue%u201D or %u201Cfalse%u201D first, then explain your answer.

By %u201Csign,%u201D I mean whether those measures are negative or positive.

Part (a)                        (1 point)

The correlation coefficient and the covariance between two variables will always have the same sign.

Part (b)            (1 point)

The coefficient of determination and the covariance between two variables will always have the same sign.

Part (c)                        (1 point)

The coefficient of determination and the correlation coefficient between two variables will always have the same sign.

Explanation / Answer

a.)True

It can be postive or negative and it will have the same sign as the covariance

b.)False

The coefficient of determination will always be postive but covariance can be negative

c.)True

The coefficient of determination and the correlation coefficient will have the same sign.

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