Combinatorics | Design of experiments
In statistics and combinatorial mathematics, group testing is any procedure that breaks up the task of identifying certain objects into tests on groups of items, rather than on individual ones. First studied by Robert Dorfman in 1943, group testing is a relatively new field of applied mathematics that can be applied to a wide range of practical applications and is an active area of research today. A familiar example of group testing involves a string of light bulbs connected in series, where exactly one of the bulbs is known to be broken. The objective is to find the broken bulb using the smallest number of tests (where a test is when some of the bulbs are connected to a power supply). A simple approach is to test each bulb individually. However, when there are a large number of bulbs it would be much more efficient to pool the bulbs into groups. For example, by connecting the first half of the bulbs at once, it can be determined which half the broken bulb is in, ruling out half of the bulbs in just one test. Schemes for carrying out group testing can be simple or complex and the tests involved at each stage may be different. Schemes in which the tests for the next stage depend on the results of the previous stages are called adaptive procedures, while schemes designed so that all the tests are known beforehand are called non-adaptive procedures. The structure of the scheme of the tests involved in a non-adaptive procedure is known as a pooling design. Group testing has many applications, including statistics, biology, computer science, medicine, engineering and cyber security. Modern interest in these testing schemes has been rekindled by the Human Genome Project. (Wikipedia).
A silent video testing series for convergence or divergence using the comparison test
From playlist 242 spring 2012 exam 3
Visual Group Theory, Lecture 1.4: Group presentations
Visual Group Theory, Lecture 1.4: Group presentations We begin this lecture by learning how to take a Cayley diagram and label its nodes with the elements of a group. Such a labeled diagram can function as a "group calculator". It leads to the notion of a "group presentation", which is a
From playlist Visual Group Theory
Testing and Online Experimentation
Join Data Science Dojo and Statsig for a conversation on experimentation and testing. Learn how leading companies like Facebook use experimentation to build better products and accelerate their growth with 10x as much testing. Web experimentation can range from simple projects like design
From playlist A/B Testing & Beyond
Definition of a group Lesson 24
In this video we take our first look at the definition of a group. It is basically a set of elements and the operation defined on them. If this set of elements and the operation defined on them obey the properties of closure and associativity, and if one of the elements is the identity el
From playlist Abstract algebra
This is lecture 1 of an online mathematics course on group theory. This lecture defines groups and gives a few examples of them.
From playlist Group theory
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
One Sample z Test Framework with Social Media Example (15-2)
The one sample z test is a parametric procedure that tests whether a single sample mean is significantly different than a population mean when the standard deviation of the population (σ) is KNOWN. We will learn the research design for the IV and DV, the assumptions for the test, how to se
From playlist Single-Sample Hypothesis Tests (z, t, & p) - WK 15 QBA 237
This video contains the origins of group theory, the formal definition, and theoretical and real-world examples for those beginning in group theory or wanting a refresher :)
From playlist Summer of Math Exposition Youtube Videos
How to Calculate t test Using Excel for Unrelated Groups (Independent groups)
Tutorial on how to calculate a t test for unrelated or independent groups using Microsoft Excel. Playlist on t tests of independent and dependent means and groups http://www.youtube.com/playlist?list=PL8B759A5C1C5C12AF Like MyBookSucks http://www.FaceBook.Com/PartyMoreStudyLess Created
From playlist t-tests of Independent and Dependent Groups
One Way ANOVA in Business Statistics, How and Why we Need ANOVA
The One-Way ANOVA allows us to extend the independent samples t-test for use with three or more groups. Instead of comparing means (like a t test), we analyze the variance between and within the groups. If the ANOVA is significant, we then follow up with a post hoc test to determine what d
From playlist Business Statistics Lectures (FA2020, QBA337 @ MSU)
STAT 200 Lesson 10 Video Lecture
Table of Contents: 00:00 - Introduction 00:35 - Learning Objectives 01:02 - 1. Explain why it is not appropriate to conduct multiple independent t tests to compare the means of more than two independent groups 04:32 - 2. Use Minitab to construct a probability plot for an F distribution
From playlist STAT 200 Video Lectures
JASP - One Way Between Subjects ANOVA
Lecturer: Dr. Erin M. Buchanan Spring 2020 Learn how to complete a one-way between subjects ANOVA using JASP including assessing for assumptions and post hoc tests! Learn more and find our documents on our OSF page: https://osf.io/t56kg/. Look at our basic statistics page for complete le
From playlist Learn JASP + Statistics
How to do an Independent Samples t Test in SPSS (11-5)
Using a dog-training example, we compare two types of reinforcement training using an independent samples t-test. We work through the five steps of hypothesis testing, and conduct the independent samples t-test in SPSS. We evaluate the Levene’s Test for Equality of Variances and compute C
From playlist WK11 Independent Sample t Tests and Paired t Tests - Online Statistics for the Flipped Classroom
DevOpsDays Chicago 2016 - Untangling Infrastructure Code... by Nell Shamrell-Harrington
DevOpsDays Chicago 2016 - Untangling Infrastructure Code Through Refactoring by Nell Shamrell-Harrington The point of infrastructure as code is to make managing infrastructure as simple as updating a config file and running a command such as “chef-client” or “terraform apply.” However, as
From playlist DevOpsDays Chicago 2016
Lecturer: Dr. Erin M. Buchanan Missouri State University Spring 2018 This video replaces a previous live in-class video that covered an overall lecture to ANOVA,. The video covers a basic background to ANOVA, the F-test, post hoc tests, and effect sizes. List of videos for class on stat
From playlist Advanced Statistics Videos
A Gentle Introduction to the Independent Samples t Test (11-2)
The independent samples t test compares one sample mean to another sample mean. It is widely used in statistics and will help us understand other statistical tests that we will learn later, such as ANOVA. The Independent Samples t Test, sometimes called “t for two,” is a parametric procedu
From playlist WK11 Independent Sample t Tests and Paired t Tests - Online Statistics for the Flipped Classroom
Lecturer: Dr. Erin M. Buchanan Spring 2020 Learn how to complete an independent t-test in JASP! Learn more and find our documents on our OSF page: https://osf.io/t56kg/. Look at our basic statistics page for complete lecture: https://statisticsofdoom.com/page/basic-statistics/.
From playlist Learn JASP + Statistics
Sums of Squares.10.ExtraF-Test
This video is brought to you by the Quantitative Analysis Institute (QAI) at Wellesley College as part of its Blended Learning Initiative. More information on the QAI's online resources can be found here: www.wellesley.edu/qai/onlineresources. To see more videos on applied statistics, chec
From playlist Applied Data Analysis and Statistical Inference
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
Chapter 11.3: ANOVA - An Introduction
Chapter 11.3 from "Introduction to Statistics, Think & Do" by Scott Stevens (http://www.StevensStats.com) Textbook from Publisher, $29.95 print, $9.95 PDF http://www.centerofmathematics.com/wwcomstore/index.php/thinkdov4-1.html Textbook from Amazon: https://amzn.to/2zJRCjL
From playlist Statistics Lecture Videos