Final Review Flashcards
Final Review
Describe the bank discount yield.
The bank discount yield is equal to face value minus price divided by face value multiplied by 360 over days to maturity.
Describe the effective annual yield or EAY.
The effective annual yield is equal to one plus the holding period yield raised to 365 over days to maturity minus one.
Describe the money market yield
Take the holding period yield and multiply 360 over days to maturity.
Describe how you would calculate a quantile.
Take the number of observations, add one, and multiply by the percentile you are looking for.
Describe Chebyschev’s (pronounced Chevy Chev) inequality.
one minus one over k squared
When a distribution is negatively skewed, the peak is to the ________ (left or right) and the mean is _________ than the median which is ________ than the mode.
right (tail to the left)
less than
less than
A distribution that is Platykurtic, has excess kurtosis that is ________ than 0, and is __________ (more or less?) peaked around the mean
less than
less
What is the addition rule (as it relates to probability)?
The probability of A or B is equal to the probability of A plus the probability of B minus the joint probability of AB.
What is the Multiplication rule (as it relates to probability) for joint and independent events? Unconditional?
Joint: The probability of AB is equal to the probability of A given B multiplied by the probability of B.
Independent: The probability of AB is equal to the probability of A multiplied by the probability of B.
Unconditional is the same as independent, but is additive.
Describe how to calculate portfolio variance.
Variance multiplied by weight squared + 2 multiplied by the weights, standard deviations and correlation.
When order does not matter, which labeling method do you use? (nCr or nPr)?
nCr ‘Combination’
When order does matter what labeling method is used? (nCr o nPr)
nPr ‘Permutation’
What is the difference between nCr and nPr ?
nCr has (n-r)!r! in the denominator vs (n-r)!
Describe the binomial formula.
P(x) = nCr multiplied by p raised to the x multiplied by the one minus p raised to the n minus x.
Describe the formula for calculating Z scores.
hypothesized value minus population mean divided by standard deviation. ( X - mu) / std dev
When the distribution is normal, variance is known, and population is either small or large what test statistic is used?
z
When the distribution is normal, variance is unknown, and population size is either small or large what test statistic is used?
t
When the population is non-normal, variance is known, and the population size is large, what test statistic is used?
z
If the distribution is non-normal, variance is unknown, and population is only large, what test statistic is used?
t
Describe the t statistic.
the test statistic is x bar minus mu not over standard error. OR sample mean reduced by hypothesized mean divided by standard deviation over square root of n
Describe the Chi Squared calculation.
Chi Squared is equal degrees of freedom (n-1) multiplied by sample variance, divided by hypothesized variance
Describe the F test.
Largest variance divided by smaller variance