Curated Video
Understanding Populations and Samples: Importance of Representative Samples and Large Sample Sizes
This video explains the concepts of populations and samples in statistical analysis. It defines population as the overall group of interest, and sample as a subset of the population used to infer information about it. The video...
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
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...
KnowMo
Types of Data and Sampling in Statistics
This video provides an overview of different types of data and sampling methods for data collection in statistics. The speaker identifies two key types of data - quantitative and qualitative - and explains their subcategories such as...
Curated Video
Choosing the Right Sample Size: Reducing Variation in Statistics
In this video, the concept of sampling in statistics is explained using examples of a fitness club and a history exam. The importance of random sampling and avoiding biased samples is emphasized. The video also highlights 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...
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
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
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
Taking a Random Sample
In this video, the teacher explains the concept of using a sample to estimate a population parameter. They discuss the difference between a population and a sample, as well as the importance of randomization in selecting a representative...
APMonitor
Imbalanced Data Classification
Imbalanced data is a disproportionate number of data points with discrete labels and can be a big challenge to develop an accurate classifier. A classifier attempts to find the data boundary where one class ends and the other begins....
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
Practical Data Science using Python - Random Forest Steps Pruning and Optimization
This video explains random forest steps pruning and optimization. This clip is from the chapter "Ensemble Methods – Random Forest" of the series "Practical Data Science Using Python".This section explains classification using decision...
Curated Video
Practical Data Science using Python - Random Variables and Normal Distribution
This video explains random variables and normal distribution. This clip is from the chapter "Statistical Techniques" of the series "Practical Data Science Using Python".This section explains advanced visualizations using business...
FuseSchool
What Is Statistics
"CREDITS Animation & Design: Jean-Pierre Louw (www.Behance.com/ Jean-Pierre_Louw) Narration: Lucy Billings Script: Lucy Billings In this video we’re going to look at sampling and bias in statistics. Statistics is it’s own branch of...
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
GCSE Secondary Maths Age 13-17 - Probability & Statistics: Probability - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
Fundamentals of Machine Learning - Linear Regression - Labs
This video explains linear regression using an example of predicting fuel efficiency. This clip is from the chapter "Labs" of the series "Fundamentals of Machine Learning".This section explains the various lab exercises on linear...
Curated Video
Counter-Intuitive Probability: Can You Solve The Pair Of Aces Riddle?
A deck has 4 cards: the ace of spades, ace of clubs, 2 of spades, and the 2 of clubs. You draw 2 cards. What is the probability you drew 2 aces, if there is at least one ace? What is the probability if one of the cards is the ace of...
Curated Video
Recommender Systems Complete Course Beginner to Advanced - Machine Learning for Recommender Systems: Item-Based Collaborative Filtering
In this video, you will learn to use machine learning to develop item-based collaborative filtering.
Northeast Arkansas Education Cooperative
Sampling Methods and Preventing Bias
Experimental design can be both incredibly intuitive and very high-concept when first introduced to learners. This video does a great job of discussing sampling methods and bias simply, without over-reducing...
Crash Course
Sampling Methods and Bias with Surveys: Crash Course Statistics #10
How many of you found the video to be useful? Young statisticians learn about surveys in the 10th installment of the Crash Course Statistics playlist. An informative video describes different sampling methods and possible sources of bias.
Flipped Math
Sampling Methods
Pupils watch a video to learn about different types of sample design and how to use technology to create a random sample. They discover different types of bias that may happen due to the sampling design or the questions. Learners use...