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統計學定理 来自维基百科,自由的百科全书
雙重期望値定理(Double expectation theorem),亦稱重疊期望値定理(Iterated expectation theorem)、全期望値定理(Law of total expectation),即设X,Y,Z为随机变量,g(·)和h(·)为连续函数,下列期望和条件期望均存在,则
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.