理解研究中的统计噪声：1. 基本概念。
Understanding Statistical Noise in Research: 1. Basic Concepts.
作者信息
Andrade Chittaranjan
机构信息
Dept. of Clinical Psychopharmacology and Neurotoxicology, National Institute of Mental Health and Neurosciences, Bangaluru, Karnataka 560029, India.
出版信息
Indian J Psychol Med. 2023 Jan;45(1):89-90. doi: 10.1177/02537176221139665. Epub 2022 Nov 22.
The signal is the outcome of interest in a study; it may be the value of a variable or it may be the value of a relationship between variables. Signals in research are distorted by statistical noise. This statistical noise is generated by extraneous variables that may be adequately measured, inadequately measured, unmeasured, or unknown; the subject-to-subject variation in the signal resulting from the effects of these extraneous variables is captured by the standard deviation. Thus, the standard deviation is a measure of statistical noise. This article, the first in a series, explains all of these concepts with the help of examples.
信号是研究中感兴趣的结果；它可能是一个变量的值，也可能是变量之间关系的值。研究中的信号会被统计噪声扭曲。这种统计噪声由可能测量充分、测量不充分、未测量或未知的外部变量产生；这些外部变量的影响导致信号在个体间的变化通过标准差来体现。因此，标准差是统计噪声的一种度量。本文是系列文章中的第一篇，借助示例解释所有这些概念。
Zotero 插件