腾讯网

秒懂统计丨统计学基本概念（四）

概率抽样（probability sampling），也称随机抽样（random sampling），是指遵循随机原则进行的抽样，总体中每个个体都有一定的机会被选入样本。从理论上讲，概率抽样是最科学的抽样方法，它能保证抽取出来的样本对总体的代表性。 概率抽样分为等概率抽样（equal ...
Nature

Survey Sampling and Estimation Methods

Survey sampling and estimation methods form the cornerstone of modern statistical inference, underpinning research across the social, medical, and natural sciences. At their heart, these methods ...
Investopedia

Simple Random Sampling: 6 Basic Steps With Examples

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
The Washington Post

Straight talk about polling: Probability sampling can be helpful but it’s no magic bullet

Mark Blumenthal and Natalie Jackson of Huffpost Pollster write: If you read polls in the news, you’re probably familiar with the term “margin of error.” What ...
NHK

Examining an Experimental Web/Mail Mixed-Mode Survey Using Probability Sampling

Following 2017, the NHK Broadcasting Culture Research Institute carried out an experimental web/mail mixed-mode survey using probability sampling from the Basic Resident Register to validate its ...