Khan Academy
Chi Square Distribution: Introduction
Watch this video to better understand the Chi-Square Distribution.
Virtual Nerd
Virtual Nerd: What Is a Normal Distribution?
This tutorial introduces normal distribution and shows the characteristics of a normal distribution curve. [4:22]
Khan Academy
Khan Academy: Confident Intervals: Small Sample Size Confidence Intervals
Constructing small sample size confidence intervals using t-distributions.
Khan Academy
Khan Academy: Bernoulli Distribution Mean and Variance Formulas
Video example of what a Bernoulli distribution is. Demonstrates how the general formulas for the mean and variance of the distribution are derived.
Khan Academy
Khan Academy: Variance and Standard Deviation: Sample Variance
This video shows how to estimate the variance of a population by looking at the data in a sample.
Sophia Learning
Sophia: Expected Value: Lesson 1
This lesson will explain expected value. It is 1 of 3 in the series titled "Expected Value." [6:12]
Sophia Learning
Sophia: Expected Value: Lesson 3
This lesson will explain expected value. It is 3 of 3 in the series titled "Expected Value." [8:00]
Imagine Learning Classroom
Learn Zillion: Video: 'Model a Data Set With a Normal Probability Distribution'
In this lesson, you will learn how to model a data set with a normal probability distribution by using the mean and standard deviation of the data set. [4:59]
Khan Academy
Khan Academy: Sampling Distribution: Sampling Distribution of the Sample Mean
Video reviews the central limit theorem and uses a simulation to illustrate sampling distributions and how they approach a normal distribution with larger sample sizes even if the original distribution was not normal.
Khan Academy
Khan Academy: Normal Distribution: Introduction to the Normal Distribution
Video discusses the importance of the normal distribution and gives its formula with examples of how it is used.
Khan Academy
Khan Academy: Bernoulli Distributions and Margin of Error: Margin of Error 1
Video example of calculating the mean, variance and standard deviation of a sample of a Bernoulli distribution. Finding the 95% confidence interval for the proportion of a population voting for a candidate.
Khan Academy
Khan Academy: Bernoulli Distributions and Margin of Error: Margin of Error 2
This video shows how to create a confidence interval for the population mean from a sample taken from a Bernoulli distribution. Finding the 95% confidence interval for the proportion of a population voting for a candidate.
Khan Academy
Khan Academy: Normal Distribution: Normal Distribution Excel Exercise
Video discusses the importance of the normal distribution. The formula for the normal distribution is given and explained. A url is given where an excel spreadsheet can be downloaded which is shown and used to compare the binomial...
Khan Academy
Khan Academy: Probability and Statistics: Random Variables
Basic idea and definitions of random variables. [5:32]
Khan Academy
Khan Academy: Shapes of Distributions
This video discusses how to interpret a data display by looking at patterns and anomolies in the shape of its distribution. [5:06]
Khan Academy
Khan Academy: Binomial Distribution 4
Visualize the basketball binomial distribution. Excel is used to calculate probabilities and graph the distribution.
Khan Academy
Khan Academy: Binomial Distribution: Binomial Distribution 3
Basketball binomial distribution. This video demonstrates the binomial distribution for an example about shooting six free throw shots by calculating the probabilities of each number of shots that were made.
Khan Academy
Khan Academy: Determining Sample Size Based on Confidence and Margin of Error
Determining sample size based on confidence level and margin of error.
Khan Academy
Khan Academy: Simulation Showing Value of T Statistic
See why we use t statistics when building confidence intervals for a mean using the sample standard deviation in place of the population standard deviation.
Khan Academy
Khan Academy: Sample Size for a Given Margin of Error for a Mean
Calculate the approximate sample size required to obtain a desired margin of error in a confidence interval for a mean.
Crash Course
Crash Course Statistics #15: Binomial Distribution
Today we're going to discuss the Binomial Distribution and a special case of this distribution known as a Bernoulli Distribution. The formulas that define these distributions provide us with shortcuts for calculating the probabilities of...
Khan Academy
Khan Academy: Constructing a Probability Distribution for Random Variable
Sal Khan breaks down how to create the probability distribution of the number of "heads" after 3 flips of a fair coin. [6:47]
Khan Academy
Khan Academy: Standard Normal Table for Proportion Below
Finding the proportion of a normal distribution that is below a value by calculating a z-score and using a z-table.