Michael B. Miller studied economics at the American University of Paris and the University of Oxford before starting a career in finance. He has worked in risk management for more than ten years, most recently as the chief risk officer for a hedge fund in New York City.
Acknowledgments xi
CHAPTER 1 Some Basic Math 1
Logarithms 1
Log Returns 3
Compounding 4
Limited Liability 5
Graphing Log Returns 5
Continuously Compounded Returns 7
Combinatorics 9
Discount Factors 10
Geometric Series 11
Problems 16
CHAPTER 2 Probabilities 19
Discrete Random Variables 19
Continuous Random Variables 20
Mutually Exclusive Events 26
Independent Events 27
Probability Matrices 28
Conditional Probability 30
Bayes’ Theorem 31
Problems 36
CHAPTER 3 Basic Statistics 39
Averages 39
Expectations 46
Variance and Standard Deviation 51
Standardized Variables 54
Covariance 54
Correlation 56
Application: Portfolio Variance and Hedging 57
Moments 60
Skewness 60
Kurtosis 64
Coskewness and Cokurtosis 67
Best Linear Unbiased Estimator (BLUE) 71
Problems 72
CHAPTER 4 Distributions 75
Parametric Distributions 75
Uniform Distribution 75
Bernoulli Distribution 78
Binomial Distribution 79
Poisson Distribution 83
Normal Distribution 84
Lognormal Distribution 88
Central Limit Theorem 90
Application: Monte Carlo Simulations Part I: Creating Normal Random Variables 92
Chi-Squared Distribution 94
Student’s t Distribution 95
F-Distribution 97
Mixture Distributions 99
Problems 102
CHAPTER 5 Hypothesis Testing & Confidence Intervals 105
The Sample Mean Revisited 105
Sample Variance Revisited 107
Confidence Intervals 108
Hypothesis Testing 109
Chebyshev’s Inequality 113
Application: VaR 114
Problems 124
CHAPTER 6 Matrix Algebra 127
Matrix Notation 127
Matrix Operations 129
Application: Transition Matrices 136
Application: Monte Carlo Simulations Part II: Cholesky Decomposition 138
Problems 141
CHAPTER 7 Vector Spaces 143
Vectors Revisited 143
Orthogonality 146
Rotation 152
Principal Component Analysis 157
Application: The Dynamic Term Structure of Interest Rates 162
Application: The Structure of Global Equity Markets 167
Problems 171
CHAPTER 8 Linear Regression Analysis 173
Linear Regression (One Regressor) 173
Linear Regression (Multivariate) 183
Application: Factor Analysis 188
Application: Stress Testing 192
Problems 194
CHAPTER 9 Time Series Models 197
Random Walks 197
Drift-Diffusion 199
Autoregression 200
Variance and Autocorrelation 205
Stationarity 206
Moving Average 212
Continuous Models 212
Application: GARCH 215
Application: Jump-Diffusion 217
Application: Interest Rate Models 218
Problems 220
CHAPTER 10 Decay Factors 223
Mean 223
Variance 230
Weighted Least Squares 231
Other Possibilities 232
Application: Hybrid VaR 233
Problems 234
APPENDIX A Binary Numbers 237
APPENDIX B Taylor Expansions 239
APPENDIX C Vector Spaces 241
APPENDIX D Greek Alphabet 242
APPENDIX E Common Abbreviations 243
Answers 245
References 283
About the Author 285
Index 287
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