Video: Standard Error
Here is a video version of Lesson 49 from Stat Trek's free online tutorial covering the complete curriculum for Advanced Placement (AP) Statistics.
About This Video Lesson
This video explains how to measure variability in a sampling distribution. It describes two measures of variability - the standard deviation of the distribution and the standard error. It explains how to compute each measure, and when to use each measure.
A written version of the material covered in this video is available at https://stattrek.com/estimation/standard-error.
Prerequisite
This video lesson refers to sampling distributions of statistics, a topic covered in a previous lesson. If you are not familiar with sampling distributions, it may be helpful to review the following lesson:
- Lesson 43: Sampling Distributions
About Stat Trek's Video Series
A little history: About two decades ago, Stat Trek produced a free online tutorial covering the complete curriculum for AP Statistics. The tutorial, which can be found at https://stattrek.com/tutorials/ap-statistics-tutorial, was to designed to help students prepare for and pass the AP Statistics exam. Consisting of 69 easy-to-understand written lessons, the tutorial was very well-received.
Of course, there is always room for improvement. With that in mind, some students suggested supplementing the written lessons with video instruction. The Stat Trek video series is our response to that suggestion. So far, we've produced 50 video lessons, one video lesson for each of the first 50 written lessons from Stat Trek's' AP Statistics Tutorial.
The work continues. We're adding videos little by little. Eventually, we intend to have a video for each of the 69 written lessons from the tutorial.