Search results
Results From The WOW.Com Content Network
The definition of convergence in distribution may be extended from random vectors to more general random elements in arbitrary metric spaces, and even to the “random variables” which are not measurable — a situation which occurs for example in the study of empirical processes. This is the “weak convergence of laws without laws being ...
This article is supplemental for “Convergence of random variables” and provides proofs for selected results. Several results will be established using the portmanteau lemma: A sequence {X n} converges in distribution to X if and only if any of the following conditions are met:
Correlated and uncorrelated random variables; Conditional expectation: law of total expectation, law of total variance; Fatou's lemma and the monotone and dominated convergence theorems; Markov's inequality and Chebyshev's inequality
Let in the theorem denote a random variable that takes the values / and / with equal probabilities. With = the summands of the first two series are identically zero and var(Y n)=. The conditions of the theorem are then satisfied, so it follows that the harmonic series with random signs converges almost surely.
In the theory of probability, the Glivenko–Cantelli theorem (sometimes referred to as the Fundamental Theorem of Statistics), named after Valery Ivanovich Glivenko and Francesco Paolo Cantelli, describes the asymptotic behaviour of the empirical distribution function as the number of independent and identically distributed observations grows. [1]
A sequence of random variables ,, …, converges weakly to the random variable if their respective CDF converges,, … converges to the CDF of , wherever is continuous. Weak convergence is also called convergence in distribution .
If X n: Ω → X is a sequence of random variables then X n is said to converge weakly (or in distribution or in law) to the random variable X: Ω → X as n → ∞ if the sequence of pushforward measures (X n) ∗ (P) converges weakly to X ∗ (P) in the sense of weak convergence of measures on X, as defined above.
Download as PDF; Printable version; ... Pages in category "Convergence (mathematics)" ... Radius of convergence; Convergence of random variables; S.