Crash Course
Sampling Methods and Bias with Surveys - Crash Course Statistics
Today we’re going to talk about good and bad surveys. From user feedback surveys, telephone polls, and those questionnaires at your doctors office, surveys are everywhere, but with their ease to create and distribute, they're also...
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
The Dangerous Ideological Bias of Economists
“We do not publish papers about our own profession.” – Top Five Journal Economists claim they are not biased or ideological, but research by economist Mohsen Javdani tells another story. Javdani discovered that 82% of economists claim...
Curated Video
How to Conduct a Survey and Choose a Sampling Method
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,...
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...
Curated Video
How to Choose the Most Random Survey
In this video, the teacher explains how to choose the best random survey to determine the average number of items bought by shoppers in a grocery store's express checkout lane between 5:00 PM and 7:00 PM. The teacher walks through four...
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...
Crash Course
Cats Vs Dogs? Let's make an AI to settle this (LAB)
Today, in our final lab, Jabril tries to make an AI to settle the question once and for all, "Will a cat or a dog make us happier?" But in building this AI, Jabril will accidentally incorporate the very bias he was trying to avoid. So...
Curated Video
How to Support Diversity and Inclusion in Your Team
The case for diversity and inclusion is simple: you get better project results. But delivering diversity and inclusion is a challenge. You need to be very deliberate in making them happen. Here's how... First, let’s clarify terms:...
Curated Video
Identify the Best Way to Sample a Population
In this short video we will answer a standardized math test question where we are asked to identify the best representative sampling of a population. We will review each answer choice looking for bias and selecting the most random...
Curated Video
The Wrong Guy Won
Why a seemingly random phone poll incorrectly predicted the outcome of the 1936 presidential race... because of a hidden bias. Maths - Statistics And Probability A Twig Math Film. Reinforce and extend the learning required by the...
Curated Video
Random Sampling
In this math video we will learn about random sampling that is representative of a population for a survey. Students will identify if a sample of a population is a valid representation. We will learn key vocabulary - population, random...
Curated Video
Can You Trust Your IQ?
Is IQ the best measure of intelligence, or could an inbuilt mechanism for measuring quantitative values mean a bias against qualitative factors? Maths - Statistics And Probability A Twig Math Film. Reinforce and extend the learning...
Institute for New Economic Thinking
The Male-centric Biases of Economic Models
The assumptions economists make in their models have implications not only for policymaking and choosing what data we collect, but also for the very definition of work, says Professor Maria Floro of American University. Many assumptions...
Crash Course
Psychological Research - Crash Course Psychology
So how do we apply the scientific method to psychological research? Lots of ways, but today Hank talks about case studies, naturalistic observation, surveys and interviews, and experimentation. Also he covers different kinds of bias in...
Curated Video
Convenience Sampling: Enhancing the Shopping Experience
In this video, the concept of convenience sampling is explained, focusing on how it can be used to enhance the shopping experience of mall shoppers. The video emphasizes that convenience sampling is a non-probability sampling method and...
Healthcare Triage
Doctors Have Sexual Harassment in the Workplace, Too.
"Sexual Harassment and Discrimination Experiences of Academic Medical Faculty". This study will depress you. This is Healthcare Triage News.
Curated Video
Why women’s ice hockey has a higher concussion rate than football
When college athletes play the same sport, women report concussions more often than men. Watch our other skating videos, featuring Mirai Nagasu and Adam Rippon: http://bit.ly/2oGrA7N Subscribe to our channel! http://goo.gl/0bsAjO In...
Curated Video
Adults Stumped By Maths Questions For 15 Year Olds. Can You Solve Them?
How hard are math tests? A survey asked 2,000 UK adults to answer sample GCSE test questions intended for 15 year old students. On average, the survey questions were missed by about 40% of adults. Can you solve them? The video presents 2...
Curated Video
Can You Solve George Washington's Math Homework? (And Abraham Lincoln's Too)
Today politicians do not much about mathematics. But interestingly George Washington and Abraham Lincoln both understood the value of mathematics. And amazingly manuscripts of their homework have survived and been preserved for hundreds...
Curated Video
Only 18% Of Mathematicians Solved This Tricky Problem
This puzzle went viral in the discrete mathematics community because so many people got it wrong! You roll a fair dice until you get a 6. What is the expected number of rolls, including the roll of 6, conditioned on the event that all...
Curated Video
Can You Solve The Probability The Newborn Is A Boy? Many Fail This Interview Question
This problem has been asked in job interviews. On the morning of January 1, a hospital nursery has 3 boys and some number of girls. That night, a woman gives birth to a child, and the child is placed in the nursery. On January 2, a...
Curated Video
Can You Solve The Marriage Logic Problem? 80% Fail
Surveys have found 80 percent get this logic problem wrong. Alice is looking at Bob, and Bob is looking at Charlie. Alice is married; Charlie is not. Is a married person looking at an unmarried person? Answer choices are A) Yes, B) No,...
Curated Video
HOW SMART ARE YOU? 80% FAIL The Dance Club Line Logic Riddle
There is a long single-file line outside of a dance club. The first person in line is unmarried, and the last person in line is married. Each person in line only looks at the person in front of them. Is a married person looking at an...