Causal inference | Design of experiments | Regression analysis | Subtraction | Econometric modeling
Difference in differences (DID or DD) is a statistical technique used in econometrics and quantitative research in the social sciences that attempts to mimic an experimental research design using observational study data, by studying the differential effect of a treatment on a 'treatment group' versus a 'control group' in a natural experiment. It calculates the effect of a treatment (i.e., an explanatory variable or an independent variable) on an outcome (i.e., a response variable or dependent variable) by comparing the average change over time in the outcome variable for the treatment group to the average change over time for the control group. Although it is intended to mitigate the effects of extraneous factors and selection bias, depending on how the treatment group is chosen, this method may still be subject to certain biases (e.g., mean regression, reverse causality and omitted variable bias). In contrast to a time-series estimate of the treatment effect on subjects (which analyzes differences over time) or a cross-section estimate of the treatment effect (which measures the difference between treatment and control groups), difference in differences uses panel data to measure the differences, between the treatment and control group, of the changes in the outcome variable that occur over time. (Wikipedia).
This video introduces similarity and explains how to determine if two figures are similar or not. http://mathispower4u.com
From playlist Number Sense - Decimals, Percents, and Ratios
The Difference Between an Expression and an Equation
This video explains the difference between an expression and an equation. Site: http://mathispower4u.com Blog: http://mathispower4u.wordpress.com
From playlist Introduction to Linear Equations in One Variable
Gravitation (3 of 17) Mass vs Weight, An Explanation
Explains the difference between mass and weight. Very important. No they are not the same thing. Mass is a measure of the amount "stuff" something is made of, the amount of atoms for example. Weight is a measure of the force of attraction between two object that have mass. Of course mass
From playlist Gravitation: Orbital Velocity, Orbital Period, Potential Energy, Kinetic Energy, Mass and Weight
definition of adjacent angles
From playlist Common Core Standards - 8th Grade
What's the difference between maths and science? Free ebook http://tinyurl.com/VectorsYT
From playlist Math is Fun!
4 differences between trains and trams
Walking down the street, you may encounter railroads on which a familiar vehicle roams the city with its poetic figure. You can also come across railroads on certain stations where the whole crowd is waiting for that one big metal body. Do you think on these railroads the same vehicles com
From playlist All About Transportation
Statistic vs Parameter & Population vs Sample
This stats video tutorial explains the difference between a statistic and a parameter. It also discusses the difference between the population and sample. It includes examples such as the sample mean, population mean, sample standard deviation, population standard deviation, sample propo
From playlist Statistics
Astronomy - Ch. 5: Light & E&M Radiation (2 of 30) Differences in Radiation
Visit http://ilectureonline.com for more math and science lectures! In this video I will discuss the differences of radiation from radio waves to gamma rays.
From playlist ASTRONOMY 5 LIGHT AND RADIATION
Describes the difference between scalars and vectors. You can see a listing of all my videos at my website, http://www.stepbystepscience.com
From playlist Motion Graphs; Position and Velocity vs. Time
Sparse resultants in differential and difference algebra: an overview
From playlist Workshop on Model Theory, Differential/Difference Algebra, and Applications
Solving difference equations in sequences It is known that a finite system of algebraic difference equations has a solution in the ring of sequences if and only if the difference ideal it generates contains 1. Moreover, there exists an algorithm that determines whether or not 1 lies in th
From playlist DART X
The Product Rule for Counting | Grade 6+ Maths Series | GCSE Maths Tutor
A video revising the techniques and strategies for using the product rule for counting. (Higher Only) This video is part of the Number module in GCSE maths, see my other videos below to continue with the series. These are the calculators that I recommend: Casio fx-83GTX Scientific Calcu
From playlist GCSE Maths Videos
A topos-theoretic view of difference algebra
From playlist Workshop on Model Theory, Differential/Difference Algebra, and Applications
Powered by https://www.numerise.com/ Identify a quadratic sequence
From playlist Quadratic sequences & graphs
Cohomology in difference algebra and geometry We view difference algebra as the study of algebraic objects in the topos of difference sets, i.e., as `ordinary algebra’ in a new universe. The methods of topos theory and categorical logic enable us to develop difference homological algebra,
From playlist DART X
Mod-03 Lec-05 The Samkhya Philosophy - I
Indian Philosophy by Dr. Satya Sundar Sethy, Department of Humanities and Social Sciences, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist IIT Madras: Introduction to Indian Philosophy | CosmoLearning.org Philosophy
Numerical Differentiation: Second Derivatives and Differentiating Data
This video explores how to numerically compute second derivatives and how to differentiate vectors of data. Examples are given in Python and Matlab. Playlist: https://www.youtube.com/playlist?list=PLMrJAkhIeNNTYaOnVI3QpH7jgULnAmvPA Course Website: http://faculty.washington.edu/sbrunton
From playlist Engineering Math: Differential Equations and Dynamical Systems
(April 14, 2010) Robert Sapolsky continues his series addressing the link between behavior and genetics. He covers the complex endeavor of gene isolation and variability and heritability and wrongly eliminated environmental influences in heritability tests -- finding that genes and environ
From playlist Lecture Collection | Human Behavioral Biology
Why don't they teach Newton's calculus of 'What comes next?'
Another long one. Obviously not for the faint of heart :) Anyway, this one is about the beautiful discrete counterpart of calculus, the calculus of sequences or the calculus of differences. Pretty much like in Alice's Wonderland things are strangely familiar and yet very different in this
From playlist Recent videos
What is the difference between theoretical and experimental physics?
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From playlist Science Unplugged: Physics