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New videos from Khan Academy 2018-04-25T15:12:40.426314
Actualizado: hace 52 mins 23 segs

Evolution of political parties in picking candidates and voter mobilization

Lun, 2018-04-02 18:20
Evolution of political parties in picking candidates and voter mobilization

A Landmark Decision: Penn Station, Grand Central, and the architectural heritage of NYC

Sáb, 2018-03-31 23:01
Dr. Matthew A. Postal and Dr. Steven Zucker discuss landmarks preservation in New York City while visiting: Charles Luckman Associates's Madison Square Garden and Pennsylvania Station (below), the former site of Charles McKim for McKim Mead, & White, Pennsylvania Station (New York City), 1910 and then visiting Reed & Stem, Warren & Wetmore's Grand Central Terminal, 1912

A Landmark Decision: Penn Station, Grand Central, and the architectural heritage of NYC

Sáb, 2018-03-31 23:01
Dr. Matthew A. Postal and Dr. Steven Zucker discuss landmarks preservation in New York City while visiting: Charles Luckman Associates's Madison Square Garden and Pennsylvania Station (below), the former site of Charles McKim for McKim Mead, & White, Pennsylvania Station (New York City), 1910 and then visiting Reed & Stem, Warren & Wetmore's Grand Central Terminal, 1912

Lion Man

Vie, 2018-03-30 22:02
Curator Jill Cook introduces the 40,000-year-old sculpture of lion man. A figure made of mammoth ivory with the body of a man and the head of a cave lion. Living with gods: peoples, places and worlds beyond 2 November 2017 – 8 April 2018 To find out more and book tickets, visit: https://goo.gl/4U7ebx Supported by the Genesis Foundation. With grateful thanks to John Studzinski CBE. The exhibition accompanies a series on BBC Radio 4 with Neil MacGregor.

The Jericho Skull

Vie, 2018-03-30 22:02
Over many years, Curator Alexandra Fletcher has formed a particularly strong bond with one of the… older people in the British Museum. In fact, she was one of the first to see his face in over 9,500 years. The Jericho Skull is arguably the oldest portrait in the British Museum – a human skull from the ancient city of Jericho which had plaster applied to it to form a type of early facial reconstruction. The Jericho Skull is fascinating to look at, but since being discovered in 1953, archaeologists weren’t able to find out much more about this man – until now. Using CT scanning, 3D printing and facial reconstruction, Alexandra and her team have finally been able to reveal the man behind the plaster. Find out more in Room 3 until 19 February 2017: The Asahi Shimbun Displays Creating an ancestor: the Jericho Skull 15 December 2016 – 19 February 2017 https://goo.gl/1p2L7M Listen to the British Museum podcast episode on the Jericho Skull’s discovery on: Mobile device https://goo.gl/GWWofs Soundcloud https://goo.gl/u5GTth iTunes https://goo.gl/oSWTUp LINKS: Twitter: http://twitter.com/britishmuseum Instagram: http://www.instagram.com/britishmuseum Facebook: http://www.facebook.com/britishmuseum Blog: http://british.museumblog.org/

Strange Worlds, immigration in the early 20th century

Vie, 2018-03-30 21:44
Todros Geller, Strange Worlds, 1928, oil on canvas, 71.8 x 66.4 cm (Art Institute of Chicago), a Seeing America video Speakers: Sarah Alvarez, Director of School Programs, Department of Learning and Engagement, The Art Institute of Chicago and Steven Zucker

Projectile motion graphs

Vie, 2018-03-30 19:07
Visualizing position, velocity and acceleration in two-dimensions for projectile motion

Average velocity and speed worked example

Vie, 2018-03-30 19:07
Sal solves a word problem to find average velocity and speed of an object in one-dimension.

Two-sample t test for difference of means

Vie, 2018-03-30 15:22
Hypothesis test for the difference between means of two populations.

Conclusion for a two-sample t test using a P-value

Vie, 2018-03-30 15:22
Given results of a two-sample t test, compare the P-value to the significance level to make a conclusion in context about the difference between two means.

Conclusion for a two-sample t test using a confidence interval

Vie, 2018-03-30 15:22
Given a confidence interval estimating the difference between two means, make a conclusion in a significance test about the difference between those means.

Example of hypotheses for paired and two-sample t tests

Vie, 2018-03-30 15:22
Example of hypotheses for paired and two-sample t tests

Hypotheses for a two-sample t test

Vie, 2018-03-30 15:22
Example of how to write hypotheses for a two-sample t test, and how to distinguish between paired and two-sample comparisons between means.

Conditions for inference for difference of means

Jue, 2018-03-29 01:54
Conditions for inference for difference of means

Calculating confidence interval for difference of means

Jue, 2018-03-29 01:54
Calculating confidence interval for difference of means

Constructing t interval for difference of means

Jue, 2018-03-29 01:54
Constructing t interval for difference of means

Hypothesis test for difference in proportions example

Mié, 2018-03-28 21:21
Hypothesis test for difference in proportions example

Hypothesis test for difference in proportions

Mié, 2018-03-28 21:21
Hypothesis test for difference in proportions

Constructing hypotheses for two proportions

Mié, 2018-03-28 21:21
Constructing hypotheses for two proportions

Comparing P value to significance level for test involving difference of proportions

Mié, 2018-03-28 21:21
Comparing P value to significance level for test involving difference of proportions

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