49. Use the following two statements to answer this question:
I. The expected return on a portfolio is the equally weighted average of the expected
returns on the individual securities in the portfolio.
II. The standard deviation of a portfolio reflects the weighted impact of the individual
securities’ standard deviations and the relationship among the co-movements of the
returns on those individual securities.
a) I is incorrect, II is correct.
b) I is correct, II is incorrect.
c) I and II are incorrect.
d) I and II are correct.
50. Which of the following is a FALSE statement of the correlation coefficient?
a) It measures how security returns move in relation to one another.
b) Positive correlation coefficients imply that the returns on Security A tend to move in
the same direction as those on security B.
c) Negative correlation coefficients imply that the returns on Security A tend to move in
the opposite direction to those on security B.
d) The closer the absolute value of the correlation coefficient is to one, the weaker the
relationship between the returns on the two securities.
51. Use the following three statements to answer this question:
I. When
and we know the return on Security A, we can predict the return on
Security B with certainty.
II. Generally, security returns display positive correlations with one another but they are
less than one, because all securities tend not to follow the movements of the overall
market.
III. Any value of correlation less than +1 provides a possibility of diversification.
a) I is incorrect, II is correct, III is correct.