Curated Video
Analyzing Independence of Events in an Observational Study
Using the example of ice cream flavors and toppings at a high school, this video demonstrates how to calculate simple probabilities and joint probabilities to check for independence. By analyzing the data from a sample of students, the...
Curated Video
Identifying and Avoiding Biased Samples
In this video, students learn about generating unbiased samples to obtain a representative sample of a population. The video discusses the types of biased sampling methods, such as convenience samples and voluntary response samples, and...
Curated Video
Statistics for Data Science and Business Analysis - Calculating Confidence Intervals Within a Population with a Known Variance
In this video, you will see the first example of the use of confidence intervals and introduce the concept of the z-score.
This clip is from the chapter "Confidence Intervals" of the series "Statistics for Data Science and Business...
Curated Video
Building America's Largest Organic Tea Company
The video is a talk by Seth Goldman, the co-founder of Honest Tea and Executive Chairman of Beyond Meat, discussing his entrepreneurial journey and the importance of incorporating personal values and ethics into business. He shares the...
Curated Video
Taking a Simple Random Sample Using a Random Number Generator
Walk through an example of selecting juniors and seniors in a high school to decide on the theme for the prom. This video provides step-by-step instructions on assigning numbers to each student, using the random number generator,...
Curated Video
Interpreting Marketing Data: Confidence Intervals, Correlations, and Extrapolation Explained
The video discusses different techniques for interpreting marketing data, including confidence intervals, correlations, and extrapolation. The speaker explains each technique in detail and provides examples to illustrate how they work in...
Curated Video
How to Obtain a Random Sample for Surveys
This video explains how to obtain a random sample from a population using different methods such as drawing names or numbers, using a table of random numbers, or a random number generator on a calculator or computer. It emphasizes the...
KnowMo
Introduction to Sampling: How to Select a Representative Sample
This video is a lecture about sampling, which is a method used to collect and analyze data about a population. The lecturer explains that it is often not feasible to collect data from every member of a population, so a sample is taken...
Schooling Online
Chemistry Properties and Structure of Matter: Properties of Matter - Percentage Composition
Watch Cookie struggle after the pirates had a late night out on the seven seas. They should be awake after eating 90% dark chocolate and drinking a strong (10 000%) coffee! This lesson will introduce the technique of gravimetric...
Curated Video
Preparation of Insoluble Salts: Using Solubility Rules and Filtration.
The video provides a detailed explanation of how to prepare a pure dry sample of an insoluble salt, specifically lead sulfate. The speaker first explains the solubility rules that determine whether a salt is soluble or not. Then, he goes...
Curated Video
Introduction to Sampling in Marketing and Research
This video gives an introduction and overview of sampling from a marketing perspective. The speaker explains the different types of sampling techniques such as random sampling, quota sampling, and stratified sampling, and provides...
FuseSchool
DNA Fingerprinting
CREDITS Animation & Design: Waldi Apollis Narration: Dale Bennett Script: Bethan Parry & Helen Stamp What is DNA fingerprinting or DNA profiling? Leicester University geneticist Alec Jeffreys developed a technique called DNA...
Professor Dave Explains
Kinetic Molecular Theory and its Postulates
We learned about ideal gases and the ideal gas laws, and we briefly touched on kinetic molecular theory, which puts these laws in context. But let's now go through this theory more rigorously, analyzing each postulate one at a time.
Global Health with Greg Martin
Hypothesis Testing
Hypothesis testing is the cornerstone of statistical analysis and the scientific method. If you are doing research or analyzing data, then you might be wanting to use statistics to draw your conclusions. Using tests like the t-test,...
Curated Video
Reducing Margin of Error with Simulation and Sample Size
This video explains how to use simulation to decrease the size of a confidence interval, using the example of a cafeteria manager who wants to know how many parents of school children believe that school lunches are satisfactory. The...
ProTeachersVideo
How Science Works: Asthma on the Run
Ceri Harrop is a biochemist at the University of Manchester specialising in respiratory medicine and developing new treatments for people with breathing difficulties. As part of her research, Ceri meets asthmatic athlete Wayne Ashall, a...
Curated Video
Statistics for Data Science and Business Analysis - Calculating Confidence Intervals for Two Means with Independent Samples (Part 1)
This is the first of the three-part video, where you'll calculate confidence intervals for two means with independent samples. This clip is from the chapter "Confidence Intervals" of the series "Statistics for Data Science and Business...
Curated Video
Statistics for Data Science and Business Analysis - Calculating Confidence Intervals Within a Population with an Unknown Variance
This video is about calculating confidence intervals within a population with an unknown variance.
This clip is from the chapter "Confidence Intervals" of the series "Statistics for Data Science and Business Analysis".This section...
Brian McLogan
Solving a word problem with one variable - Online tutor - Free Math Videos
👉 Learn how to solve equations from word problems. A word problem is a real word simulation of a mathematics principle. We can solve equation(s) from a word problems by first understanding what the problem is asking. We then assign...
Curated Video
Understanding Bias in Statistical Investigations
In this video, the teacher explains the concept of bias in statistical investigations. They discuss the different types of bias, such as selection bias and response bias, and provide examples to help students understand how bias can...
Curated Video
Determining Sampling Methods in Statistical Investigations
In this video, the teacher explains how to determine a researcher's sampling method. They discuss the difference between a population and a sample, and the importance of having a representative sample. They explain the concepts of simple...
Curated Video
Sampling Distributions and Approximation through Simulation
In this video, the teacher discusses the concept of sampling distributions and how to approximate them using simulations. The example used is about a high school surveying students' opinions on increasing graduation requirements for math...
NASA
‎NASA's Curious Universe: Asteroid Hunting
NASA's OSIRIS-REx spacecraft will attempt a daring feat: to briefly reach out its mechanical arm and grab a sample from an asteroid’s surface. Dante Lauretta, Heather Enos, and Ron Mink introduce you to NASA’s asteroid hunter and what...
Professor Dave Explains
Electron Microscopy (TEM and SEM)
We've talked a lot about light microscopy, but this technique has inherent limitations in resolution and magnification. The next paradigm in microscopy that emerged in the middle of the 20th century was electron microscopy. Because...