我國到底有多少只東北虎

摘要

東北虎是我國稀有的珍貴動物，東北虎在我國的數(shù)量，究竟還有多少呢？為確切了解我國東北虎的數(shù)量狀況，國內(nèi)的權(quán)威部門以及不少的林業(yè)部門在過去進行了實際的數(shù)量調(diào)查，他們設(shè)計和安排了許多測試，根據(jù)腳印, 糞便, 收集了大量的原始數(shù)據(jù)，以求能較為客觀地了解東北虎的真實數(shù)量狀況，但由于統(tǒng)計方法的不同，數(shù)量的調(diào)查結(jié)果存在著1定的差異,因此對1個群體的數(shù)量只能作1個大概的估計. 本文就用數(shù)理統(tǒng)計的方法對我國現(xiàn)存東北虎的只數(shù)進行了矩法估計，極大似然估計和貝葉斯估計.

關(guān)鍵詞：矩法估計;極大似然估計;貝葉斯估計;超幾何分布.

How Many Northeast Tigers In Our Country

ABSTRACT

In China, Northeast tiger is a kind of rare and precious animal. But after all, how many Northeast tigers are there in our country? In order to know the number of the Northeast tigers in our country, the domestic authorities and many forestry departments did some practical quantitative investigations in the past. They designed and arranged many tests, and also according to the tracks and dung they collected a lot of original data in an attempt to know objectively the real quantity condition of Northeast tigers. However, because of different statistic methods, there are some differences in the quantitative investigation result. Therefore, we could only have a general estimation about the number of the group. In this paper, I will use the device of mathematical statistics to do moment method of estimation, maximum likelihood estimation, Bayes estimation about the number of our country s existent Northeast tigers.

Key words: moment method of estimation; Maximum likelihood estimation;

Bayes estimation; Supper geometrical distribution.

目 錄

中文題目

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中文摘要，關(guān)鍵詞

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英文題目

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英文摘要，關(guān)鍵詞

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前言

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1. 1些基本概念

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2. 2項分布的幾個結(jié)果

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3. 基本假設(shè)

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4. 東北虎的只數(shù)問題

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參考文獻

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致謝詞

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