Instructional Video

Why are Degrees of Freedom (n-1) Used in Variance and Standard Deviation

Curated and Reviewed by Lesson Planet

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. 

1 Collection 15 Views 2 Downloads
CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Lecture would work well for homework in a flipped classroom
Classroom Considerations
  • Pupils should already be familiar with figuring standard deviation before the lesson
  • Be sure to follow the lesson with more direct instruction, as the video might leave some pupils confused
  • The second in a series of seven statistics videos
  • This video is hosted on YouTube
Pros
  • Demonstrates one guided practice problem step by step
Cons
  • Does not clearly explain why mathematicians use degrees of freedom