点击这里, 观看更多视频: https://alugha.com/FuseSchool 你可能见过三种不同的衡量平均值的方法. 4, 6, 6, 7, 10, 11, 12 均值 = 8 中值 = 7 众数 = 6 极差也经常被一起提及… 虽然它并不是衡量平均值的方法, 而是最大值和最小值之差. 所以, 这里的极差是十二减四, 也就是八. 4, 6, 6, 7, 10, 11, 12 均值 = 8 中值 = 7 众数 = 6 极差= 12 - 4 = 8 The range provides context for the mean, median and mode. If the range is large, then the mean median or mode might not represent the data very well. Whereas if the range is small, then they will represent the data well. In this video, we learn all about The Range in more detail. 极差为均值, 中值和众数提供了一个情景. 如果极差偏大, 得出的均值, 中值和众数可能无法很好的代表数据. 如果极差偏小, 它们的代表性就好. 通过本视频，我们将更加细致的了解极差. 访问我们的网站 www.fuseschool.org，在那里我们所有的视频都被精心按主题和订单分类，查看下我们还准备了什么。留言、点赞并与其他同学分享吧。你可以提问, 也可以回答问题，我们的老师也会为大家解惑。 这些视频可用于翻转课堂或用作复习辅助。 使用 fusesschool 平台和其app可获得更深入的学习体验: www.fuseschool.org 本教育视频资源是开放且免费的，在知识共享协议下: 署名-非商业性CC by nc(查看许可契约): http://creativecommons.org/licenses/by-nc/4.0/ ). 你可以下载这段视频或在非盈利组织和教育机构使用。如果想修改视频，请联系我们: info@fuseschool.org
Algebraic fractions are simply fractions with algebraic expressions either on the top, bottom or both. We treat them in the same way as we would numerical fractions. In this video we look at how to simplify algebraic fractions, and how to add and subtract them. VISIT us at www.fuseschool.org, wh
CREDITS Animation & Design: Peter van de Heuvel Narration: Lucy Billings Script: Lucy Billings The word polygon comes from Greek. Poly means “many” and Gon means “angles”. Polygon = many angles. Polygons are 2-dimensional shapes, that are made of straight lines, with all the sides joined up. VISIT
In algebra we have lots of different names for different things: expressions, equations, formulae and identities are all slightly different versions of similar things. Then within these, we have variables, constants, coefficients and exponents to describe the different parts. We also need to know wh
