Crash Course
Confidence Intervals: Crash Course Statistics #20
Be confident about your ability to understand statistics. The 20th installment of the Crash Course Statistics playlist, the informative YouTube video describes the meaning of confidence intervals and how they relate to normal...
Crash Course
The Normal Distribution: Crash Course Statistics #19
It's normal to want to learn about normal distribution. The 19th installment of the Crash Course Statistics series focuses on how means of sample distributions show a normal distribution. It looks at the Central Limit Theorem and also...
Teacher's Pet
Using Math to Analyze Data
No one wants to be average, so mathematicians use the term mean instead of average. The video explains how to calculate the mean, how to calculate the percent error, and why this information is important. Finally, the video considers the...
statisticsfun
How to Calculate Confidence Intervals and Margin of Error
Explore the meaning of the margin of error and how to use it to calculate the confidence interval with a video that explains how to calculate a margin of error based on the sample size. The instructor also makes a connection between...
statisticsfun
How to use Excel to Calculate Confidence Interval
Utilize Excel software to analyze a set of data by making statistical calculations. The instructor shows how to find the standard deviation, mean, minimum, maximum, margin of error, confidence intervals, and range using Excel commands....
statisticsfun
How to Calculate Margin of Error Confidence Interval for a Population Proportion
Teach how to find a confidence interval from a population proportion and margin of error with a video that reviews how to find a population proportion and a margin of error. The instructor then explains how to create a confidence...
statisticsfun
How to Calculate Margin of Error and Standard Deviation
What did the math book say to the psychology book? I have a lot of problems. A helpful video covers how to calculate the margin of error with various standard deviation numbers.
statisticsfun
Why are Degrees of Freedom (n-1) Used in Variance and Standard Deviation
Don't be mean, be above average. A straightforward video explains why degrees of freedom are used and how to recognize the error based on your sample population.
statisticsfun
Calculate Sample Size Interval of a Population Mean
When does .2 round up rather than down? The example in a statistics video changes the rules about rounding. The video walks through how to solve for sample size when you are given the error, z score, and standard deviation. It...
statisticsfun
How to Calculate Sample Size Proportions
Have you ever wondered about the proportion of ducks it would take to equal one bear's weight? (It's 423.) The video walks through how to solve for sample size when you already know the confidence, error, and proportion. It also graphs...
Khan Academy
Khan Academy: Statistics: Sampling Distribution Example Problem
Video example of using a sample distribution to solve a problem determining the probability that a sample mean is below a certain number. Includes example of finding a z-score and looking it up in a table to determine the probability....
Khan Academy
Khan Academy: Inferential Statistics: Confidence Interval 1
Video showing how to determine the probability that the population mean is between two given values when given the mean and standard deviation of a sample. Uses sampling distribution and calculates a z-score in order to determine the...
Khan Academy
Khan Academy: Statistics: Standard Error of the Mean
Video first briefly reviews the effect on the sampling distribution when the sample size increases then gives the formula for variance of the sample mean of the sampling distribution and formula for standard error of the mean. Uses the...
Texas Education Agency
Texas Gateway: Study Edge Statistics: Variability in Sample Proportions, Part 1
This lesson models how to solve problems involving samples of populations and the variability in the results of a statistical study. Provides a link to an interactive web app called "Sampling Distribution of the Sample Proportion."...
Texas Education Agency
Texas Gateway: Study Edge Statistics: Variability in Sample Proportions, Part 2
This lesson continues an exploration of variability in sample proportions that was begun in the Part 1 video, extending the ideas. About four minutes in, it provides a link to an interactive web app called "Sampling Distribution of the...
Texas Education Agency
Texas Gateway: Study Edge Statistics: Variability in Sample Means
This lesson investigates the variability in the sampling distribution of the sample mean for a population. Provides a link to an interactive web app for looking at a continuous population distribution. Includes downloadable study guide...
Annenberg Foundation
Annenberg Learner: Against All Odds: Normal Distributions
A look at how histograms, and the curves that are drawn based on histogram data, can help one analyze data. Video program offers real-life examples to illustrate this: population age and baseball statistics. [28:40]
Texas Education Agency
Texas Gateway: Study Edge Statistics: Measuring Spread of a Distribution
This lesson looks at the different measures of center and variability that are used when analyzing the spread of data in a distribution. Includes downloadable study guide with exercises - guide also covers other topics. [17:21]
Khan Academy
Khan Academy: Statistics: Large Sample Proportion Hypothesis Test
Video gives an example of a hypothesis test calculation involving the proportion of the population that has internet access given a large sample size. Discusses finding a critical z-score to determine whether to reject the null...
Khan Academy
Khan Academy: Statistics: 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. Also discusses the...
Khan Academy
Khan Academy: Statistics: Sampling Distribution of the Sample Mean 2
Video discusses the effect of sample size on the sampling distribution. Shows using a simulation how as sample size increases the sampling distribution becomes more normal and the standard deviation decreases. Also discusses the effect...
Khan Academy
Khan Academy: Statistics: Inferring Population Mean From Sample Mean
Explanation of the difference between population and sample mean. Includes notation and reasons for using sample mean to infer information about a population. [10:02]
Khan Academy
Khan Academy: Statistics: Margin of Error 1
Video example of calculating the mean, variance and standard deviation of a sample of a Bernoulli distribution. Video is leading up to creating a confidence interval which will be shown in the next video. [15:02]
Khan Academy
Khan Academy: Hypothesis Testing With One Sample
T-Statistic Confidence Interval (for small sample sizes)