SciShow
The Brewer Who Secretly Revolutionized Statistics | Great Minds: William Gosset
When you have a study with a small sample size, how do you know that the results represent the broader population? Well, thanks to a brewer who needed to assess beer quality in the early 1900s, we now have a simple statistical test that...
SciShow
Why Is Sperm Count Dropping?
Sperm count in Western countries has been dropping for over a hundred years, and scientists have some ideas as to what’s behind this swimmer shortage.
Bozeman Science
Mechanisms that Increase Genetic Variation
Paul Andersen describes mechanisms that increase the genetic variation within a population. He begins by discussing how horizontal transfer can move genetic material between bacteria. Transformation, transduction, and conjugation in...
Crash Course
Ecological Succession: Change is Good - Crash Course Ecology
In the world of ecology, the only constant is change - but change can be good. Today Hank explains ecological succession and how ecological communities change over time to become beautiful, biodiverse mosaics.
Bozeman Science
Population Variation
Paul Andersen explains the importance of genetic variation within a population. He begins with a discussion of the devil facial tumor that is a form of cancer transferred between Tasmanian devils. He then explains how a decrease in...
Bozeman Science
DNA Fingerprinting
Paul Andersen describes the process of DNA fingerprinting and DNA profiling. He explains how variability in STRs can be used to identify individuals. He explains the importance of DNA fingerprinting in forensics and paternity cases.
Curated Video
What is a Statistical Question?
In this math video we will determine what is a statistical question. A statistical question is a question you ask that has more than one possible answer. A question that has only ONE possible answer is NOT a statistical question! A group...
Curated Video
How Your Body Warns You About Future Depression
Did you know that your heart rate variability can warn you about future depression? In this video, I talk about a study that found a strong correlation between decreased heart rate variability and increased risk for developing depression...
Curated Video
Neural Networks
Northeastern University social psychologist Lisa Feldman Barrett relates how modern neuroscience has moved from focusing on the behaviour of individual neurons to examining neural networks - vast numbers of neurons linked together.
Curated Video
Bad Assumptions
Lisa Feldman Barrett, Northeastern University, describes how the concept of variability is a key concept to understanding the brain that has been consistently overlooked as we developed invalid assumptions of brain processing based upon...
Curated Video
Context and Variability
Cognitive scientist Lisa Feldman Barrett (Northeastern) highlights how our current models of psychology are often based on false principles, using metaphors for the mind that simply don’t apply to the brain.
Curated Video
R Programming for Statistics and Data Science - Decomposition of Variability: SST, SSR, SSE
This video explains decomposition of variability: SST, SSR, SSE. This clip is from the chapter "Linear Regression Analysis" of the series "R Programming for Statistics and Data Science".This section explains linear regression analysis.
Curated Video
R Programming for Statistics and Data Science - R-Squared
This video explains R-squared. This clip is from the chapter "Linear Regression Analysis" of the series "R Programming for Statistics and Data Science".This section explains linear regression analysis.
Curated Video
R Programming for Statistics and Data Science - Standard Error and Confidence Intervals
This video explains standard error and confidence intervals. This clip is from the chapter "Hypothesis Testing" of the series "R Programming for Statistics and Data Science".This section explains hypothesis testing.
Science360
Supercomputers Assist In Climate Forecasting - Innovators
Responding to the challenge of climate change requires understanding more about climate variability and the changes expected. Jim Kinter, director of the Center for Ocean-Land-Atmosphere Studies (COLA), explains how scientists there are...
Curated Video
Using Graphs to Persuade: Measures of Center and Variability
In this video, the teacher explains how to use graphs to persuade parents that a bad test grade in math doesn't reflect overall performance. By analyzing measures of center and variability, such as the median, mode, mean, and MAD, the...
Curated Video
Comparing Variability of Heights: Mean and Mean Absolute Deviation
Using the example of heights on WNBA and NBA teams, students will calculate the mean and MAD for each dataset, and then compare the variability between the two. This lesson helps students understand the importance of considering the MAD...
National Parks Service
Yosemite Nature Notes 8: Snow Line
Throughout the winter, the elevation where rain turns to snow changes with each new storm. Join a meteorologist and park scientists as we chase the snow line in Yosemite.
Catalyst University
The Pyramidalis Muscle | Origin, Insertion, Innervation, Action, & Variation
Here, we discuss the genetic variability of the pyramidalis muscle and its properties: origin, insertion, innervation, and action.
Curated Video
Analyzing Deceptive Advertising Using Measures of Center and Variability
This video describes the importance of not relying solely on the mean, as outliers can skew the data, and emphasize the significance of considering the median and MAD (mean absolute deviation) for a more accurate representation of the...
Curated Video
Statistics for Data Science and Business Analysis - Standard Error
This video introduces the standard error - an important ingredient for making predictions. This clip is from the chapter "Inferential Statistics Fundamentals" of the series "Statistics for Data Science and Business Analysis".This section...
Curated Video
Statistics for Data Science and Business Analysis - What is R-Squared and How Does it Help Us?
In this video, you will learn about R-squared and its features. This clip is from the chapter "Subtleties of Regression Analysis" of the series "Statistics for Data Science and Business Analysis".This section explains the Markowitz...
NASA
NASA | Striking a Solar Balance
Planet Earth is an oasis of life, but without the Sun, our home planet would be a drastically different, inhospitable place. The Sun's electromagnetic energy makes life on Earth possible; solar power also generates clouds, cleans our...
NASA
Life of the Monsoon
The monsoon is a seasonal rain and wind pattern that occurs over South Asia (among other places). Through NASA satellites and models we can see the monsoon patterns like never before. Monsoon rains provide important reservoirs of water...