Intermediate Probability
Chapter Listing
Contents
Preface
Part I Sums of Random Variables
1 Generating functions
1.1 The moment generating function
1.1.1 Moments and the m.g.f.
1.1.2 The cumulant generating function
1.1.3 Uniqueness of the m.g.f.
1.1.4 Vector m.g.f.
1.2 Characteristic functions
1.2.1 Complex numbers
1.2.2 Laplace transforms
1.2.3 Basic properties of characteristic functions
1.2.4 Relation between the m.g.f. and c.f.
1.2.5 Inversion formulae for mass and density functions
1.2.6 Inversion formulae for the c.d.f.
1.3 Use of the fast Fourier transform
1.3.1 Fourier series
1.3.2 Discrete and fast Fourier transforms
1.3.3 Applying the FFT to c.f. inversion
1.4 Multivariate case
1.5 Problems
2 Sums and other functions of several random variables
2.1 Weighted sums of independent random variables
2.2 Exact integral expressions for functions of two continuous random variables
2.3 Approximating the mean and variance
2.4 Problems
3 The multivariate normal distribution
3.1 Vector expectation and variance
3.2 Basic properties of the multivariate normal
3.3 Density and moment generating function
3.4 Simulation and c.d.f. calculation
3.5 Marginal and conditional normal distributions
3.6 Partial correlation
3.7 Joint distribution of X and S2 for i.i.d. normal samples
3.8 Matrix algebra
3.9 Problems
Part II Asymptotics and Other Approximations
4 Convergence concepts
4.1 Inequalities for random variables
4.2 Convergence of sequences of sets
4.3 Convergence of sequences of random variables
4.3.1 Convergence in probability
4.3.2 Almost sure convergence
4.3.3 Convergence in r-mean
4.3.4 Convergence in distribution
4.4 The central limit theorem
4.5 Problems
5 Saddlepoint approximations
5.1 Univariate
5.1.1 Density saddlepoint approximation
5.1.2 Saddlepoint approximation to the c.d.f.
5.1.3 Detailed illustration: the normal–Laplace sum
5.2 Multivariate
5.2.1 Conditional distributions
5.2.2 Bivariate c.d.f. approximation
5.2.3 Marginal distributions
5.3 The hypergeometric functions 1F1 and 2F1
5.4 Problems
6 Order statistics
6.1 Distribution theory for i.i.d. samples
6.1.1 Univariate
6.1.2 Multivariate
6.1.3 Sample range and midrange
6.2 Further examples
6.3 Distribution theory for dependent samples
6.4 Problems
Part III More Flexible and Advanced Random Variables
7 Generalizing and mixing
7.1 Basic methods of extension
7.1.1 Nesting and generalizing constants
7.1.2 Asymmetric extensions
7.1.3 Extension to the real line
7.1.4 Transformations
7.1.5 Invention of flexible forms
7.2 Weighted sums of independent random variables
7.3 Mixtures
7.3.1 Countable mixtures
7.3.2 Continuous mixtures
7.4 Problems
8 The stable Paretian distribution
8.1 Symmetric stable
8.2 Asymmetric stable
8.3 Moments
8.3.1 Mean
8.3.2 Fractional absolute moment proof I
8.3.3 Fractional absolute moment proof II
8.4 Simulation
8.5 Generalized central limit theorem
9 Generalized inverse Gaussian and generalized hyperbolic distributions
9.1 Introduction
9.2 The modified Bessel function of the third kind
9.3 Mixtures of normal distributions
9.3.1 Mixture mechanics
9.3.2 Moments and generating functions
9.4 The generalized inverse Gaussian distribution
9.4.1 Definition and general formulae
9.4.2 The subfamilies of the GIG distribution family
9.5 The generalized hyperbolic distribution
9.5.1 Definition, parameters and general formulae
9.5.2 The subfamilies of the GHyp distribution family
9.5.3 Limiting cases of GHyp
9.6 Properties of the GHyp distribution family
9.6.1 Location–scale behaviour of GHyp
9.6.2 The parameters of GHyp
9.6.3 Alternative parameterizations of GHyp
9.6.4 The shape triangle
9.6.5 Convolution and infinite divisibility
9.7 Problems
10 Noncentral distributions
10.1 Noncentral chi-square
10.1.1 Derivation
10.1.2 Moments
10.1.3 Computation
10.1.4 Weighted sums of independent central 2 random variables
10.1.5 Weighted sums of independent χ[sup(2)] η[sub(i)],θ[sub(i)]) random variables
10.2 Singly and doubly noncentral F
10.2.1 Derivation
10.2.2 Moments
10.2.3 Exact computation
10.2.4 Approximate computation methods
10.3 Noncentral beta
10.4 Singly and doubly noncentral t
10.4.1 Derivation
10.4.2 Saddlepoint approximation
10.4.3 Moments
10.5 Saddlepoint uniqueness for the doubly noncentral F
10.6 Problems
A Notation and distribution tables
References
Index