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10. Given a set of 25 observations, for what values of the correlation coefficient would we be able to say that there is evidence that a relationship...

10.

Given a set of 25 observations, for what values of the correlation coefficient

would we be able to say that there is evidence that a relationship exists between

the two variables?

A) | rxy| ≥ 0.40

B) | rxy| ≥ 0.35

C) | rxy| ≥ 0.30

D) | rxy|≥ 0.25

11.

Over the past 10 years, the return on Stock A has averaged 8.4% with a standard

deviation of 2.1%. The return on Stock B has averaged 3.6% with a standard

deviation of 0.9%. Which of the following statements is true?

A) Stock A has smaller relative variation than Stock B.

B) Stock B has smaller relative variation than Stock A.

C) Both stocks exhibit the same relative variation.

D) Unable to tell with the given information.

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