CFA Level 1 Random Deck 1 Flashcards
(248 cards)
those that have failed are not included in the results
Survivorship bias - hedge funds
arises if a study uses information that was not available on a test date
Look ahead bias
arises if a test is based on a certain time period
time -period bias
the formulate used to calculate a point estimate
Estimator
uses sample data to calculate the range of possible (or probable) values that an unknown paramount can take, with a given probability (1-level of significance)
confidence interval
Refers to the degree of confidence that the relevant parameter will lie in the computed interval
Level of significance
degrees of freedom
sample size minus 1 (n-1)
When the variance of a normally distributed population is not know, we use the _____ to construct confidence interval.
t-distribution
Desirable properties of an estimator
- Unbiasedness; 2. Efficiency; 3: Consistency
When is the t-value used?
Normal/non-normaul distribution with unknown variance (note if sample is small it can’t be done)
Rejecting the null hypothesis when it is actually true
Type I Error
Failing to reject the null hypothesis when it is actually false
Type II Error
The ____ represents the probability of making a Type II Error
significance level (1-level of significance)
The power of a test is the
probability of correctly rejecting the null hypothesis when it is false. Power of a test = 1 - P(Type II Error)
What is shortfall risk?
Risk that the portfolio will fall below some minimum acceptable level over some time horizon.
A parametric test has as least one of two characteristics:
Features: 1) Concerned with parameters, or defining features of a distribution 2) Definite set of assumptions
Test to see if the variance amongst two independent populations is equal (normally distributed population)
F-Test (one tail - right - rejection area)
test to see if the variance of a single normally distributed population is different
Chi-Square Test (two tail - reject null if outside interval)
Key Rate Duration
measures a bond’s sensitivity to a shift at one or more maturity segments of the yield thrive which results in a change to the yield curve shape
Modified and Effective duration mention a bond’s sensitivity to _______ shifts in the entire curve
Parallel - all rates change by the same amount in the same direction
What the only difference in the formulas used to calculate modified and effective duration?
Modified uses Change in YIELD in the Denominator; Effective uses Change in CURVE
What effect does a put option have on a bond’s duration?
reduces effective duration - most likely you’ll get your cash back sooner.
Money Duration is calculated as the _______ times the ______
annual modified duration x full price
Convexity measure the ______ order effect.
Second order effect on a bond’s percentage price change given a change in the YTM.