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Statistics: Squared Error of Regression Line
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CC BY-NC-SA
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This 7-minute video lesson provides an introduction to the idea that one can find a line that minimizes the squared distances to the points. [Statistics playlist: Lesson 62 of 85]

Subject:
Mathematics
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Salman Khan
Date Added:
02/20/2011
Statistics: Standard Error of the Mean
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This 15-minute video lesson looks at the Standard Error of the Mean (a.k.a. the standard deviation of the sampling distribution of the sample mean!). [Statistics playlist: Lesson 38 of 85]

Subject:
Mathematics
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Salman Khan
Date Added:
08/01/2011
Statistics: Type 1 Errors
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CC BY-NC-SA
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This 3-minute video lesson discusses Type I Errors. [Statistics playlist: Lesson 50 of 85]

Subject:
Mathematics
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Salman Khan
Date Added:
02/20/2011
Three Points Defining a Circle
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CC BY-NC-SA
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This 10-minute video lesson shows that three points uniquely define a circle and that the center of a circle is the circumcenter for any triangle that the circle is circumscribed about.

Subject:
Mathematics
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Salman Khan
Date Added:
07/12/2018
World War I: Homefront
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Copyright Restricted
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World War I led to many changes at home for the United States. As international migration slowed considerably, the availability of wartime factory jobs led half a million African Americans to leave the South and move to northern and western cities for work. But the US government also stifled dissent during World War I with restrictions on freedom of speech and antiwar protest.

Subject:
History
Material Type:
Lesson
Provider:
Khan Academy
Date Added:
03/22/2024