Risk Measures Flashcards
Standard Deviation
Measures TOTAL RISK of an Undiversified Portfolio
Standard Deviation calculator Keys
Enter #—> Sigma Key, enter next #, then sigma key again, then orange key, Sx,Sy key (is the 8 key)
Standard Deviation Bell Curve
+/- 1 std dev = 68%
+/- 2 Std Dev = 95%
+/- 3 Std Dev = 99%
Coefficient of Variation Formula
Used when comparing 2 assets w/ different average returns
= Std dev / Avg. expected return
The higher it is, more risky the investment and less likely to achieve the average return
Correlation Coefficient
Only ranges from +1 to -1
Shows strength & direction 2 assets move relative to each other
+1 means perfectly correlated
0 means completely uncorrelated
Diversification benefits begin when it’s less than +1
Beta
Measures Systematic risk (Market Risk) (Undiversifiable Risk)
Appropriate measure for a well diversified portfolio
Coefficient of Determination or R-Squared
Measures how much return is due to market
Found by squaring the correlation coefficient
R-squared also tells if Beta is appropriate measure of risk
When to use Beta or Standard Deviation based on R-Squared? (Coefficient of Determination)
If R^2 greater than or equal to 0.70, use BETA (Treynor)
If R^2 Less than 0.70, use Standard Deviation (Sharpe)
Which index do you pick for an appropriate benchmark?
Pick the one with highest
R-Squared or correlation
Systematic Risk
Undiversifiable
Market risk
Economy based risk
Unsystematic Risk
Diversifiable
Unique risk
Company-specific risk
R-Squared can be derived from what measure?
Can be derived from squaring the correlation