tag:blogger.com,1999:blog-6875495717243167933.post5582277030984142613..comments2021-04-03T10:49:42.109-04:00Comments on A Little Stats: Common Core Algebra II: Students' HeightsAmy Hoganhttp://www.blogger.com/profile/16977577345624584601noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-6875495717243167933.post-36741207205120807162017-08-28T18:58:29.725-04:002017-08-28T18:58:29.725-04:00Thanks for the comprehensive follow up. And I like...Thanks for the comprehensive follow up. And I like how you offer improvements! Let's hope someone is reading.Patrick Honnerhttps://www.blogger.com/profile/04818663155751096756noreply@blogger.comtag:blogger.com,1999:blog-6875495717243167933.post-67843633489464940152017-08-28T16:03:45.743-04:002017-08-28T16:03:45.743-04:00Yes, all of those things would be completely inapp...Yes, all of those things would be completely inappropriate for middle and high-school students. MAD is not in the Common Core standards (although is sometimes mentioned in a statistics or physics class). Neither is any of the work from anyone you have cited. If you are curious about what is appropriate, I direct you to the GAISE Report linked on my Stats Things Loved page: http://alittlestats.blogspot.com/p/things-loved.html. <br /><br />I think you'll find it interesting!!Amy Hoganhttps://www.blogger.com/profile/16977577345624584601noreply@blogger.comtag:blogger.com,1999:blog-6875495717243167933.post-42532378168096844712017-08-28T14:47:20.695-04:002017-08-28T14:47:20.695-04:00This would be completely inappropriate for middle/...This would be completely inappropriate for middle/high-school students, but there are actually a number of useful robust measures for spread. Probably the easiest is the Median Absolute Deviation, MAD = median(abs(x - median(x))), which has the same efficiency as IQR but works even better against outliers. Then there's some work by Rosseauw and Croux (Sn and Qn), and then more recently by Garth Tarr (Pn).<br /><br />Thought you might find those interesting!tcmJOEnoreply@blogger.com