How to estimate a population using statisticians

From Standup Mathematician. Thanks so much to the Royal Statistics Society, and Jen Rogers in particular, for letting me come along and hang-out at the conference. RSS: https://www.rss.org.uk/ JEN: https://www.jenniferrogers.co.uk/ Basic-level intro to capture-recapture sampling: http://www.bbc.co.uk/schools/gcsebitesize/science/add_ocr_gateway/green_world/ecologyrev2.shtml And some advanced-level details about multi-capture: https://projects.ncsu.edu/cals/course/fw353/Estimate.htm If you want to see my excel spreadsheet: here it is exactly…

Ordinals vs Cardinals (and how many algebraic numbers are there?)

From Standup Mathematician. If you want to see the transfinite ordinals, then check out the Vsauce video “How To Count Past Infinity”. https://www.youtube.com/watch?v=SrU9YDoXE88 Here is Simon Pampena’s Numberphile video about algebraic and transcendental numbers. https://www.youtube.com/watch?v=seUU2bZtfgM My personal favourite way to order and count the rationals. https://www.youtube.com/watch?v=DpwUVExX27E Watch James Grime show that the reals are uncountably…

Does daylight savings kill people?

From Standup Mathematician. Read the paper: “Daylight savings time and myocardial infarction” https://openheart.bmj.com/content/1/1/e000019 Pre-order Humble Pi on Maths Gear! https://mathsgear.co.uk/products/humble-pi You can also pre-order Humble Pi on Amazon: https://www.amazon.co.uk/Humble-Pi-Comedy-Maths-Errors/dp/0241360234/ref=sr_1_1?_encoding=UTF8&tag=stanupmath-21 EU plans to scrap daylight savings: https://www.reuters.com/article/us-eu-time/eu-seeks-to-scrap-seasonal-clock-changes-in-2019-idUSKCN1LU1O4 Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:…

Making a physical Lissajous curve

From Standup Mathematician. Original tweet by Julio Mulero @juliomulero on 11 September 2018: https://twitter.com/juliomulero/status/1039456605736185856 Previous tweet by Vincent Pantaloni @panlepan on 20 January 2018: https://twitter.com/panlepan/status/954694464697720833 Download Vincent’s Geogebra file: https://www.dropbox.com/s/in51f5dyxlzcn13/Lissajous-table-4×4.ggb?dl=0 Here is my near-missajous excel file. https://www.dropbox.com/s/e80jg8wnhgrjic3/parametric%20drawing%20SUM.xlsx?dl=0 Lissajous Curve on Mathworld. http://mathworld.wolfram.com/LissajousCurve.html This is the turntable I used: https://www.amazon.co.uk/dp/B012A0LK8S/ref=sr_1_1?_encoding=UTF8&tag=stanupmath-21 Thanks to my Patreon supports who…

THE SCUTOID: did scientists discover a new shape?

From Standup Mathematician. Read the Nature paper for yourself: “Scutoids are a geometrical solution to three-dimensional packing of epithelia” https://www.nature.com/articles/s41467-018-05376-1 Thanks to Laura and Clara for helping me with the video! You can download Laura’s model for free or order a print from Shapeways: https://www.thingiverse.com/thing:3024272 https://www.shapeways.com/product/L4D27PP24/pair-of-packable-scutoids Laura Taalman, James Madison University https://www.jmu.edu/mathstat/people/faculty-full-time/Taalman-Laura.shtml Clara Grima, University…

Can animals predict the future? Meet Barry the Psychic Labrador!

From Standup Mathematician. Barry the Psychic Labrador has predicted an England win: https://psychic-pets.com/pets/232 Lilo the Psychic Basset Hound has predicted a Sweden win: https://psychic-pets.com/pets/1246 This video was uploaded before the World Cup quarter-final: England vs Sweden on 7 July 2018. And Barry was right. BAAAAAARY! http://twitter.com/standupmaths/status/1015626452371410944 Check out the Psychic Pets project: http://psychic-pets.com/ The Psychic…

How many different World Cup results can a team have?

From Standup Mathematician. Register your pet at Psychic Pets and start predicting the World Cup games! http://psychic-pets.com/ You can also donate money to help keep the Psychic Pet servers running! Via PayPal: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=MKYVJHXPW3TRC Or support me directly on Patreon: https://www.patreon.com/standupmaths Or use this strange base-58 number: 195ucbJHh4NfxdMVjXKwFL9FzFkWFRM5fZ Free teaching resources over here: http://think-maths.co.uk/psychic-pets Cases for…

Psychic Pets: can your pet predict the World Cup results?

From Standup Mathematician. Register your pet at Psychic Pets and start predicting the World Cup games! http://psychic-pets.com/ If you’d like to help out with vetting the pet videos or translating the site, send me an email: matt@psychic-pets.com You can donate money to help keep the site going via PayPal: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=MKYVJHXPW3TRC Or support me directly on…

The Rug Puzzle: how many triangles?

From Standup Mathematician. This video sponsored by ME. I mean: MATHS GEAR. Buy my book. https://mathsgear.co.uk/collections/books/products/signed-paperback-things-to-make-and-do-in-the-fourth-dimension My original tweet that started the puzzle! https://twitter.com/standupmaths/status/981178738594533376 Owner of the rug is Andris Bērziņš: @BerzinsAndris You can find it online here: http://www.narma.ee/collection/treski-t65 Download the smaller rug grid: https://www.dropbox.com/s/ozifr0dmy0i2he5/rug-grid.png?dl=0 Hand working out was Calvin Stromwall: @Cstromw https://twitter.com/Cstromw/status/981208250577190913 The code…