In the analysis of multivariate observations designed to assess subjects with respect to an attribute, a Guttman scale (named after Louis Guttman) is a single (unidimensional) ordinal scale for the assessment of the attribute, from which the original observations may be reproduced. The discovery of a Guttman scale in data depends on their multivariate distribution's conforming to a particular structure (see below). Hence, a Guttman scale is a hypothesis about the structure of the data, formulated with respect to a specified attribute and a specified population and cannot be constructed for any given set of observations. Contrary to a widespread belief, a Guttman scale is not limited to dichotomous variables and does not necessarily determine an order among the variables. But if variables are all dichotomous, the variables are indeed ordered by their sensitivity in recording the assessed attribute, as illustrated by Example 1. (Wikipedia).
(ML 7.7.A1) Dirichlet distribution
Definition of the Dirichlet distribution, what it looks like, intuition for what the parameters control, and some statistics: mean, mode, and variance.
From playlist Machine Learning
Percentiles, Deciles, Quartiles
Understanding percentiles, quartiles, and deciles through definitions and examples
From playlist Unit 1: Descriptive Statistics
This video shows how to use unit scale to determine the actual dimensions of a model and how to determine the dimensions of a model from an actual dimensions. http://mathispower4u.yolasite.com/
From playlist Unit Scale and Scale Factor
The Caltech Effect: Long Cai on Michael Elowitz, Viviana Gradinaru, Mitch Guttman and David Anderson
Caltech scientists talk about work by fellow Chen Institute researchers that they find inspiring. In this video, Professor of Biology and Biological Engineering Long Cai talks about the work of Professor of Biology and Bioengineering Michael Elowitz, Professor of Neuroscience and Biologi
From playlist Chen Neuroscience Research Building Dedication
From playlist Basic Statistics (Descriptive Statistics)
JASP 0.14 Tutorial: Reliability Analysis (Cronbach's alpha) (Episode 23)
In this JASP tutorial, I go through how to do a Reliability Analysis, using Cronbach's alpha, using data from the Data Library. Options include choosing the stats for your analysis, getting descriptives for items and for the scale, and perhaps the best feature: Reverse-coding items for the
From playlist JASP Tutorials
Reliability 2: Cronbach's alpha and internal reliability
In this video, I discuss Cronbach's alpha and internal reliability. I also demonstrate how to compute Cronbach's alpha in SPSS and make sense of SPSS output such as corrected-item-total correlation, squared multiple correlations, and Cronbach's alpha if item deleted. Taber's (2017) paper c
From playlist Reliability analysis
JASP 0.16 Tutorial: Inter-Item Correlation Reliability Module (Episode 40)
In this JASP tutorial, I explore briefly the new options and calculations of the Inter-item correlation coefficient (ICC) for reliability analysis! The data in this video can be found in the base JASP Data Library. JASP: https://jasp-stats.org NOTE: This tutorial uses the new preview/be
From playlist JASP Tutorials
Scales of Measurement - Nominal, Ordinal, Interval, & Ratio Scale Data
This statistics video tutorial provides a basic introduction into the different forms of scales of measurement such as nominal, ordinal, interval, and ratio scale data. My Website: https://www.video-tutor.net Patreon Donations: https://www.patreon.com/MathScienceTutor Amazon Store: htt
From playlist Statistics
Ex: Determine the Value of a Number on a Logarithmic Scale (Log Form)
This video explains how to determine the value of several numbers on a logarithmic scale scaled in logarithmic form. http://mathispower4u.com
From playlist Using the Definition of a Logarithm
X-Ramanujan graphs: ex uno plures - Ryan O'Donnell
Computer Science/Discrete Mathematics Seminar Topic: X-Ramanujan graphs: ex uno plures Speaker: Ryan O'Donnell Affiliation: Carnegie Mellon University Time/Room: 3:30pm - 4:30pm/Simonyi Hall 101 Date: October 29, 2018 For more video please visit http://video.ias.edu
From playlist Mathematics
What are nominal ordinal and scale in IBM SPSS Statistics? Three levels of measurement explained.
From playlist SPSS
A Chemical Love Story - Prashant Bhat - 3/16/2019
"A Chemical Love Story" by Prashant Bhat, Graduate Student, Biology & Biological Engineering, Caltech TED-style talk presented at Caltech's Science for March event. For more information: http://scienceformarch.sites.caltech.edu © 2019 California Institute of Technology
From playlist Caltech Science for March 2019: TED-style talks
2018 Distinguished Alumnus - A. McDonald - 5/19/2018
Distinguished Alumnus Arthur B. McDonald (PhD '70)
From playlist Caltech Alumni Seminar Day
(PP 6.1) Multivariate Gaussian - definition
Introduction to the multivariate Gaussian (or multivariate Normal) distribution.
From playlist Probability Theory
More Standard Deviation and Variance
Further explanations and examples of standard deviation and variance
From playlist Unit 1: Descriptive Statistics
Sidney Coleman, Quantum Mechanics in Your Face [1994]
S. R. Coleman, Quantum Mechanics in Your Face. A lecture given by Sidney Coleman at the New England sectional meeting of the American Physical Society (Apr. 9, 1994). Video taken from: http://media.physics.harvard.edu/video/?id=SidneyColeman_QMIYF
From playlist Mathematics
Dr. Walter Koroshetz describes advances in molecular and systems neuroscience that may reveal secrets of how the brain works and issue in a Golden Age of Neuroscience. In the first decades of the 20th century physics entered a golden age as experimentalists and theorists uncovered the sec
From playlist Wu Tsai Neurosciences Institute
Multivariate Gaussian distributions
Properties of the multivariate Gaussian probability distribution
From playlist cs273a
Free to Choose Part 4: From Cradle to Grave Featuring Milton Friedman
For more videos: Facebook: www.facebook.com/FreeToChooseNetwork Media Website: http://freetochoosemedia.org/index.php Twitter: https://twitter.com/FreeToChooseNet Company: http://freetochoosenetwork.org Shop: http://www.freetochoose.net Stream: http://freetochoose.tv
From playlist "Free to Choose" by Milton Friedman