Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Multiple Comparison Tests01:13

Multiple Comparison Tests

3.9K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
3.9K
Decision Making: P-value Method01:09

Decision Making: P-value Method

5.3K
The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim  is also stated. These statements can act as null and alternative hypotheses:  a null hypothesis would be a neutral statement while the alternative hypothesis can...
5.3K
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K
Survival Tree01:19

Survival Tree

78
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
 Building a Survival Tree
Constructing a...
78
Decision Making: Traditional Method01:14

Decision Making: Traditional Method

4.0K
The process of hypothesis testing based on the traditional method includes calculating the critical value, testing the value of the test statistic using the sample data, and interpreting these values.
First, a specific claim about the population parameter is decided based on the research question and is stated in a simple form. Further, an opposing statement to this claim is also stated. These statements can act as null and alternative hypotheses, out of which a null hypothesis would be a...
4.0K
Comparing Experimental Results: Student's t-Test01:09

Comparing Experimental Results: Student's t-Test

1.5K
The t-test is a statistical method used to compare the sample mean with a population mean or compare two means from two data sets. The test statistic is calculated from the standard deviation, mean, and number of measurements in the data set at a selected confidence interval and then compared to a table of critical values at this confidence level. If the test statistic is smaller than the critical value, the null hypothesis is accepted. In this case, we state that the difference between the...
1.5K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Pulsed field ablation using a large-tip focal contact force-sensing catheter with 3-dimensional mapping integration: 12-Month outcomes from the OMNY-AF pilot phase.

Heart rhythm O2·2026
Same author

Outcomes of Left Atrial Appendage Occlusion With a Coated Device: Primary Analysis of HEAL-LAA.

JACC. Clinical electrophysiology·2026
Same author

Impact of age and diagnosis-to-ablation time on sex differences in 12-month outcomes after catheter ablation for atrial fibrillation: An admIRE subanalysis.

Heart rhythm·2026
Same author

Impact of lab-based drug checking services on syringe service program engagement in Maryland, USA.

Harm reduction journal·2026
Same author

Procedural characteristics and clinical outcomes from same-day discharge after pulsed field ablation treatment for atrial fibrillation: an admIRE trial sub-analysis.

Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology·2025
Same author

State-of-the-Art Review of Current Technology in Pressure Injury Early Detection.

Advances in skin & wound care·2025
Same journal

Precise Numerical Differentiation of Thermodynamic Functions with Multicomplex Variables.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

Characterization of 3-Dimensional Printing and Casting Materials for use in Computed Tomography and X-ray Imaging Phantoms.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

On The Quotient of a Centralized and a Non-centralized Complex Gaussian Random Variable.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

Fast Methods for Finding Multiple Effective Influencers in Real Networks.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

Disinfection of Respirators with Ultraviolet Radiation.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

DNA Origami Design: A How-To Tutorial.

Journal of research of the National Institute of Standards and Technology·2024
查看所有相关文章

相关实验视频

Updated: Jun 20, 2025

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances
07:35

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

Published on: October 11, 2018

7.5K

关键比较的决策树.

Amanda Possolo1, Amanda Koepke1, David Newton2

  • 1National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.

Journal of research of the National Institute of Standards and Technology
|July 17, 2024
PubMed
概括
此摘要是机器生成的。

一个新的决策树指导了统计模型的选择,用于衡量学中的关键比较. 它有助于计算各种科学领域适用的参考值和等效度.

关键词:
贝叶斯语 贝叶斯语 贝叶斯语 贝叶斯语科克兰的Q测试这是高斯式的高斯式.拉普拉斯是拉普拉斯的一位.沙皮罗-威尔克试验学生 学生 学生 学生的等效度等同度的等效度.这是一个层次结构.关键比较参考价值的关键比较这就是Skew-t.对称性测试测试对称性测试权重平均值 权重平均值 权重平均值权重中位数 权重中位数

更多相关视频

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
12:18

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

Published on: January 11, 2020

7.5K
Spotting Cheetahs: Identifying Individuals by Their Footprints
09:47

Spotting Cheetahs: Identifying Individuals by Their Footprints

Published on: May 1, 2016

14.8K

相关实验视频

Last Updated: Jun 20, 2025

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances
07:35

Selecting Multiple Biomarker Subsets with Similarly Effective Binary Classification Performances

Published on: October 11, 2018

7.5K
A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
12:18

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

Published on: January 11, 2020

7.5K
Spotting Cheetahs: Identifying Individuals by Their Footprints
09:47

Spotting Cheetahs: Identifying Individuals by Their Footprints

Published on: May 1, 2016

14.8K

科学领域:

  • 在化学和生物学中的计量学.
  • 统计建模 统计建模
  • 测量科学 测量科学 测量科学

背景情况:

  • 化学和生物学物质量计量咨询委员会 (CCQM) 的无机分析工作组 (IAWG) 要求在关键比较 (KC) 中为统计模型选择提供指导.
  • 现有的方法可能不涵盖在KC中遇到的所有场景.
  • 对于数据缩小和模型选择的标准化方法的需求对于一致和可靠的结果至关重要.

研究的目的:

  • 引入决策树,以指导统计模型的选择和关键比较 (KC) 的数据缩小程序.
  • 为计算关键比较参考值 (KCRV),其不确定性和等效度 (DoE) 提供一个框架.
  • 为各种计量工作组和咨询委员会提供一个广泛适用的工具.

主要方法:

  • 开发一个结合三个统计测试的决策树.
  • 决策树包括五个终端叶子,每个叶子对应于计算KCRV,不确定性和DoE的不同方法.
  • 从CCQM-IAWG KC,放射性核素测量和热敏电阻功率传感器效率中提取的说明性示例.

主要成果:

  • 决策树为选择合适的统计模型和数据缩小程序提供了一个结构化的方法.
  • 它为计算KCRV,相关不确定性和等效度提供了五种不同的途径.
  • 在各种计量学应用中证明了适用性,包括化学分析和物理测量.

结论:

  • 决策树作为一个有价值的指南,而不是一个严格的决定因素,用于KC统计分析.
  • 它支持科学家负责KCs的知情决策.
  • 该工具具有广泛的适用性,不会使现有的计量结果或CMC无效.