👉 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...

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...

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...

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'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...

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...

What the heck is dry ice and why is it so spooky? Learn this and more when we investigate phase changes and phase diagrams!

Oil immersion is an interesting and complex microscopy tool.

This video demonstrates how to blend NIST middle distillate certified reference materials. It is intended to be used in conjunction with NIST Special Publication SP 260-167 available at href='http://ts.nist.gov/MeasurementService...'...

Learn the basics about Relative Atomic Mass. It is a tricky concept that's actually quite simple to understand and here, you will know how to calculate it. Find more in this video!

The Secret Things Living in Your Aquarium

Imagine having the ability to manipulate light waves in order to see through a skull right into the brain, or being able to use lasers to diagnose a bacterial infection in a matter of minutes. At the Center for Biophotonic Sensors and...

In this video, we demonstrate how to solve problems by working backwards and using algebraic equations. The examples given involve picking plants at a greenhouse and identifying the probability of certain coat markings in a sample of...

Here we look at some psychological field experiments, such as Hofling's study of nurse obedience, Fischer's test of the cognitive interview and the Pilliavins' research on samaritanism, to show what they offer psychologists compared to...

In this lesson, students will learn how to use random sampling to make inferences about a population with an unknown characteristic. They will understand the importance of having a representative sample and the limitations of making...

In this video, the teacher explains how to make estimates about a population with an unknown characteristic by using the mean of multiple samples. The teacher demonstrates the process of setting up a proportion and calculating the mean,...

In this video, the teacher explains how to determine the likelihood that a hypothesis is reasonable by approximating a sampling distribution and analyzing the results. The example used is whether a majority of students in a state are in...

This video explains how to use a confidence interval in research, using examples of statistics gathered from various samples. It breaks down the concept of margin of error and how it relates to the confidence level and interval. The...

This video provides a lesson on how to conduct a sample survey to determine the popularity of two soda brands, A and B, on a college campus. It explains different sampling methods such as simple random sampling, systematic sampling,...

In this video, we learn about conditional probability through the example of determining if someone is right or left thumbed based on their right-handedness. The teacher explains how to read a tree diagram and fills it in with...

Learn how to use proportional reasoning to estimate the number of t-shirts of each size to order for a field day. Review the concept of random sampling and how it helps in making valid inferences about the entire population. Explore how...