An ABX test is a method of comparing two choices of sensory stimuli to identify detectable differences between them. A subject is presented with two known samples (sample A, the first reference, and sample B, the second reference) followed by one unknown sample X that is randomly selected from either A or B. The subject is then required to identify X as either A or B. If X cannot be identified reliably with a low p-value in a predetermined number of trials, then the null hypothesis cannot be rejected and it cannot be proven that there is a perceptible difference between A and B. ABX tests can easily be performed as double-blind trials, eliminating any possible unconscious influence from the researcher or the test supervisor. Because samples A and B are provided just prior to sample X, the difference does not have to be discerned from assumption based on long-term memory or past experience. Thus, the ABX test answers whether or not, under ideal circumstances, a perceptual difference can be found. ABX tests are commonly used in evaluations of digital audio data compression methods; sample A is typically an uncompressed sample, and sample B is a compressed version of A. Audible compression artifacts that indicate a shortcoming in the compression algorithm can be identified with subsequent testing. ABX tests can also be used to compare the different degrees of fidelity loss between two different audio formats at a given bitrate. ABX tests can be used to audition input, processing, and output components as well as cabling: virtually any audio product or prototype design. (Wikipedia).
Let Your Users Decide What They Want (Power of A/B Tests)
My talk is about letting the users help you understand what they need and if a particular feature is really useful for the users by using the technique of A/B testing. We are constantly running A/B tests to improve the customer experience by measuring the business metrics. Attend my talk t
From playlist Performance and Testing
What is A/A Testing? | A/B Testing Fundamentals
A/A testing is the tactic of using A/B testing to test two identical versions of a page against each other. In this quick tutorial we go over A/A testing, what it is and how to use it to help you properly conduct A/B or multivariate tests. -- Learn more about Data Science Dojo here: http
From playlist Data Science in Minutes
What is A/B Testing? | Data Science in Minutes
What is A/B testing? In this quick tutorial, we go over the basics of A/B testing, as well as answer some in-depth questions such as: why should businesses conduct A/B testing? Or how do you perform an A/B test? A/B testing aims to determine not only which technique performs better but al
From playlist Data Science in Minutes
What is Multivariate Testing? | Data Science in Minutes
In this tutorial, we will explain: how a multivariate test differs from an A/B Test, how to create and conduct a multivariate test, and what questions you should be asking of your test. Multivariate testing is a technique for testing a hypothesis in which multiple variables are modified.
From playlist Data Science in Minutes
A/B Testing - Simply Explained
I'm going to walk you through A/B testing. A topic very crucial if you’re working in the data science space. We’re going to walk through the steps to conduct such a test ourselves. A/B test duration Calculator: https://vwo.com/ab-split-test-duration/ If like content like this, hit that l
From playlist A/B Testing
Online Experimentation and AB Testing
In this meetup, we give a quick introduction to online experimentation and A/B testing. To keep the tutorial self-contained, we first give an overview of stats fundamentals needed to understand A/B testing. we explain how A/B testing is done in an online business. In the end, we mention
From playlist A/B Testing & Beyond
Chem 203. Lecture 13: Coupling Analysis in First Order and Near First Order Spin Systems
Full Chem 203 Playlist: https://www.youtube.com/playlist?list=PLqOZ6FD_RQ7nUiPCa47zSrMWArKAdwfcD UCI Chem 203 Organic Spectroscopy (Fall 2020) Lecture 13: Coupling Analysis in First Order and Near First Order Spin Systems Instructor: James S. Nowick, Ph.D. License: Creative Commons BY-NC-
From playlist Chemistry 203, Organic Spectroscopy (2020)
ABX Index to price subprime risk
ABX introduced a means for the transparent pricing of subprime risk (where previously there was none). In the second part of this briefcast, I show how the authors instructively calculate the implied spread given the index price.
From playlist Financial Crisis: Subprime
AP Calculus AB/BC Unit 2 Practice Test
In this video, I do a walkthrough of an AP Calculus AB/BC Unit 2 Practice Test. The topics covered in this video are exclusively Unit 2 Topics such as defining the derivative of a function, connecting differentiability and continuity, power rule, derivatives of cosx, sinx, e^x, and lnx. I
From playlist AP Calculus AB/BC Review
How to run A/B Tests as a Data Scientist!
Let's learn about how & why you should use Bayesian Testing. And some advantages of the Bayesian approach over frequentist approach with REAL data/code. Note: Bayesian Appraoch isn't necessarily better in every way - it is another perspective of looking at data. CODE: https://github.com/a
From playlist A/B Testing
Chem 203. Discussion 07: Midterm Exam and Preview NMR Homework #4
Full Chem 203 Playlist: https://www.youtube.com/playlist?list=PLqOZ6FD_RQ7nUiPCa47zSrMWArKAdwfcD UCI Chem 203 Organic Spectroscopy (Fall 2020) Discussion 07: Midterm Exam and Preview NMR Homework #4 Instructor: James S. Nowick, Ph.D. License: Creative Commons BY-NC-SA Terms of Use: http
From playlist Chemistry 203, Organic Spectroscopy (2020)
Chem 203. Organic Spectroscopy. Lecture 12. Coupling Analysis in Systems
UCI Chem 203 Organic Spectroscopy (Fall 2011) Lec 12. Organic Spectroscopy -- Coupling Analysis in First-Order and Near-First Order Systems. View the complete course: http://ocw.uci.edu/courses/chem_203_organic_spectroscopy.html Instructor: James Nowick, Ph.D. License: Creative Commons BY
From playlist Chem 203: Organic Spectroscopy
AP Calculus AB/BC Unit 1 Practice Test
In this video, I do a walkthrough of an AP Calculus AB/BC Unit 1 Practice Test. The topics covered in this video are exclusively Unit 1 Topics such as estimating limits with a graph, estimating limits from a table, determining limits algebraically, limits at infinity, Squeeze Theorem, Inte
From playlist AP Calculus AB/BC Review
factoring by grouping (KristaKingMath)
► My Algebra 2 course: https://www.kristakingmath.com/algebra-2-course In this video we'll learn how to factor a polynomial using grouping, where we group terms together that have a common factor, factor out the common factor, and then see if we can factor out a whole binomial. ● ● ● GET
From playlist Algebra 2
System of Equations with Variables: ax + by = a^2 + b^2 and bx + ay = 2ab
In this video we solve the system of equations ax + by = a^2 + b^2 and bx + ay = 2ab. We do this by using the elimination method. This example has lots of variables but the process for solving it is the same as other examples. Basic Mathematics Book: https://amzn.to/3GN97j3 This is my aff
From playlist Systems of Equations
Proof: The Angle of a Triangle Opposite The Longest Side is the Largest Angle
This video proves if the one side of a triangle is longer than another, then the angle opposite the longer side is greater than the angle opposite the shorter side. Complete Video List: http://www.mathispower4u.yolasite.com
From playlist Relationships with Triangles
Horiba DX120 blood analyzer teardown part 1
A look at a hugely complicated bit of lab kit Part 2 : https://www.youtube.com/watch?v=_d_hmF7Y6P8 Horiba video presentation : http://www.youtube.com /watch?v=WChPinxLCIQ 350 page User Manual : http://www.yeec.com/uploadimages1/forum/abx/abxpentra120sps%E7%94%A8%E6%88%B7%E6%89%8B%E5%86%8C
From playlist Teardowns
Horiba DX120 Blood analyzer Part 2
Part 1 : https://www.youtube.com/watch?v=W55wNMFRqPE Horiba video presentation : http://www.youtube.com/watch?v=WChPinxLCIQ 350 page User Manual : http://www.yeec.com/uploadimages1/forum/abx/abxpentra120sps%E7%94%A8%E6%88%B7%E6%89%8B%E5%86%8C.pdf 500+ page Technical manual : http://www.y
From playlist Teardowns
Pre-recorded lecture 4: Nijenhuis operators in dimension 2 and examples
***Apologies, but the original files to some of these lectures are broken, and thus freeze part way through, however the lecture slides can be found here: https://mathematical-research-institute.sydney.edu.au/wp-content/uploads/2022/02/Lecture4_Nijenhuis.pdf *** MATRIX-SMRI Symposium: Nij
From playlist MATRIX-SMRI Symposium: Nijenhuis Geometry companion lectures (Sino-Russian Mathematical Centre)
3_5_1 The Integral Test and Comparison Tests
The integral test for convergence of a series.
From playlist Advanced Calculus / Multivariable Calculus