A suppressor variable is a variable that increases the predictive validity of another variable when included in a regression equation. Suppression can occur when a single causal variable is related to an outcome variable through two separate mediator variables, and when one of those mediated effects is positive and one is negative. In such a case, each mediator variable suppresses or conceals the effect that is carried through the other mediator variable. For example, higher intelligence scores (a causal variable, A) may cause an increase in error detection (a mediator variable, B) which in turn may cause a decrease in errors made at work on an assembly line (an outcome variable, X); at the same time, intelligence could also cause an increase in boredom (C), which in turn may cause an increase in errors (X). Thus, in one causal path intelligence decreases errors, and in the other it increases them. When neither mediator is included in the analysis, intelligence appears to have no effect or a weak effect on errors. However, when boredom is controlled intelligence will appear to decrease errors, and when error detection is controlled intelligence will appear to increase errors. If intelligence could be increased while only boredom was held constant, errors would decrease; if intelligence could be increased while holding only error detection constant, errors would increase. (Wikipedia).
C68 The physics of damped motion
See how the graphs of damped motion changes with changes in mass, the spring constant, and the initial value constants. The equations tell us which parameters influence the period, frequency and amplitude of oscillation.
From playlist Differential Equations
What is a mediator variable? Definition and examples. How it compares with a moderating variable.
From playlist Types of Variables
Statistics: Ch 5 Discrete Random Variable (2 of 27) What is a Discrete Random Variable?
Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn a discrete random variable can be a count of something, an integer, as how many times a coin comes up “heads” or “tails
From playlist STATISTICS CH 5 DISCRETE RANDOM VARIABLE
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More resources available at www.misterwootube.com
From playlist Random Variables
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Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn a random variable is a variable which represents the outcome of a trial, an experiment, or an event. It is a specific n
From playlist STATISTICS CH 5 DISCRETE RANDOM VARIABLE
DISCRETE Random Variables: Finite and Infinite Distributions (9-2)
A Discrete Random Variable is any outcome of a statistical experiment that takes on discrete (i.e., separate and distinct) numerical values. Discrete outcomes: all potential outcomes numerical values are integers (i.e., whole numbers). They cannot be negative. Using an example of tests in
From playlist Discrete Probability Distributions in Statistics (WK 9 - QBA 237)
Review of Linear Time Invariant Systems
http://AllSignalProcessing.com for more great signal-processing content: ad-free videos, concept/screenshot files, quizzes, MATLAB and data files. Review: systems, linear systems, time invariant systems, impulse response and convolution, linear constant-coefficient difference equations
From playlist Introduction and Background
Have you ever wondered why there are two sexes? As in, why do we require sexes for sex? The origin of the sexes is actually a very interesting question in theoretical biology, and in today's video I'll be covering my favourite hypothesis for the evolution of the sexes: The Hurst-Hamilton H
From playlist Evolution Collaboration
What is a Confounding Variable?
Definition of a confounding variable, with examples.
From playlist Types of Variables
MIT 7.013 Introductory Biology, Spring 2011 View the complete course: http://ocw.mit.edu/7-013S11 Instructor: Tyler Jacks In this lecture, Professor Jacks continues the discussion on cancer genetics, followed by cancer therapies and prevention. License: Creative Commons BY-NC-SA More inf
From playlist MIT 7.013 Introductory Biology, Spring 2011
MIT 7.016 Introductory Biology, Fall 2018 Instructor: Adam Martin View the complete course: https://ocw.mit.edu/7-016F18 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP63LmSVIVzy584-ZbjbJ-Y63 After previous lectures on how cell division is regulated at the single cell
From playlist MIT 7.016 Introductory Biology, Fall 2018
Lec 29 | MIT 7.013 Introductory Biology
Cancer 2 (Prof. Tyler Jacks) View the complete course at: http://ocw.mit.edu/7-013S06 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 7.013 Introductory Biology, Spring 2006
Year 12 HSC Biology Module 7 Infectious Disease The Immune System B cell (humoral or antibody-mediated response) and T cell (cell-mediated response) Simple model too
From playlist Y12 Bio Mod 7 Infectious Disease
Dr. Patrick continues from part I of this series on explaining the body's defense mechanisms against cancer. She explains the role of tumor suppressor genes in killing pre-cancerous and malignant cells and how your diet affects these important genes. ▶︎ Part I of this video series http:/
From playlist Just Me
See Through Suppressor in Super Slow Motion (110,000 fps) - Smarter Every Day 177
Click here to get $30 off Hello Fresh ⇒ http://bit.ly/2u8N9Pv ⇐ Promo Code: "Smarter" Behind the Scenes: https://www.youtube.com/watch?v=v7fqcYxV_b4 Click here if you're like to subscribe: http://bit.ly/Subscribe2SED ⇊ Click below for more links! ⇊ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET STU
From playlist Guns!
- Dr. Rhonda Patrick explains what antioxidants are, why they are important, and how they prevent DNA damage, a well-known cancer initiator, in order to minimize damage to DNA. However, in the context of someone that already has cancer, DNA damage can activate genes that kill cancer cell
From playlist Setting The Record Straight
Loss of cell cycle control in cancer | Cells | MCAT | Khan Academy
Learn about the different "seasons" of a cell's life and how it grows with time. By Raja Narayan. Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do n
From playlist Cells | MCAT | Khan Academy
Tumor suppressors | Biomolecules | MCAT | Khan Academy
Created by Tracy Kim Kovach. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/biomolecules/genetic-mutations/v/an-introduction-to-genetic-mutations?utm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/biom
From playlist Biomolecules | MCAT | Khan Academy