Formula sheet Flashcards
Geometric mean, harmonic mean, mean absolute deviation and percentile formula
Population variance, sample variance and sample target sample standard deviation formula
Coefficient of variation, order of MMM for skewness, probability stated as odds
Prob of A or B, Joint probaility of A and B, Joint Probability of any number of
independent events
Total probability rule, EV of random variable, variance of random variable
Portfolio E(r), Portfolio variance, covariance, correlation, bayes formula
Multiplication rule of counting, multinomial formula for labelling problems, combinaiton formula (# ways choose r from n) when order not matter
N choose r (order matters), Probability function for a Binomial
Random Variable
When to use Z-value or t-value
A z-test is used to test a Null Hypothesis if the population variance is known, or if the sample size is larger than 30, for an unknown population variance. A t-test is used when the sample size is less than 30 and the population variance is unknown.
Expected Value and Variance of a
Binomial Random Variable, Continuous Uniform Distribution
Standardizing a random normal variable and % within Stdevs, Safety-First Ratio, Degrees of Freedom of Student’s T-distribution, Standard Error of the Sample Mean (known and unknown pop variance)
CI formula and common Z-values, CI with small and large sample, Type 1 and 2 errors, power of a test, test of single mean
Test of diff in means (equal variances), Test of the Difference in Means (Unequal Variances), Test of Mean of Differences, Test of a Single Variance, Test of the differences in Variances
Test of correlation, regression coefficient, Assumptions of SLR, Total sum of squares of formula
Coef of determination, SE of estimate, F-Stat, test of slope coefficient
Test of intercept coefficient, prediction interval, break even and shutdown points, firm structures
Profit max point (all firms), GDP income and exp approach, Nom and real GDP
GDP deflator, National income, Personal income &
Personal disposable Income
AD shifts, AS SR and LR shifts
Growth accounting eq, Econ indicators, types of unemployment, CPI
Formula for marginal revenue
MP and CB objectives, FP and multiplier, EQ of exchange, GDP vs GNP
RTA types, BOP components
Real exchange rate formula, change in nominal exchange rate
Change in ReR, forward discount/premium, No-arb forward rate, ER regimes
Accounting equation, IS eq, FS analysis framework,