statistics – Sustainability Math
https://sustainabilitymath.org
A Quantitative Literacy and Mathematics Resource for InstructorsThu, 16 Jul 2020 11:10:36 +0000en-US
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https://sustainabilitymath.org
3232What’s new at sustainabilitymath?
https://sustainabilitymath.org/2020/07/20/whats-new-at-sustainabilitymath-5/
Mon, 20 Jul 2020 20:45:21 +0000http://sustainabilitymath.org/?p=3171There is now a new page that contains animations for concepts related to statistics and calculus. They are not sustainability related, but since I post materials for calculus and statistics and I have been playing with R, I decided to post these. There are 19 topics covered with 36 animations. In particular, if you teach calculus or statistics these animations may be helpful. So...

]]>Urban/Rural Red/Blue?
https://sustainabilitymath.org/2020/04/16/urban-rural-red-blue/
Thu, 16 Apr 2020 20:45:06 +0000http://sustainabilitymath.org/?p=2894FiveThirtyEight has the interesting graph copied here from their article How Urban or Rural is Your State? And What Does That Mean For The 2020 Election? by Nathaniel Rakich (4/14/2020). How did they measure urbanization? Essentially, we calculated the average number of people living within a five-mile radius of every census tract and took the natural logarithm to create an “urbanization index,”...

]]>What are people’s view of C-19?
https://sustainabilitymath.org/2020/03/30/what-are-peoples-view-of-c-19/
Mon, 30 Mar 2020 20:45:33 +0000http://sustainabilitymath.org/?p=2874The Pew article Worries About Coronavirus Surge, as Most Americans Expect a Recession – or Worse (3/26/2020) reports the results from a survey related to COVID-19. Most of it is not too surprising: There is broad public agreement that the nation is confronting a crisis. Two-thirds of Americans – including majorities in all major demographic and partisan groups – say COVID-19 is a “significant...

]]>What is the distribution of people by age and race?
https://sustainabilitymath.org/2019/10/03/what-is-the-distribution-of-people-by-age-and-race/
Thu, 03 Oct 2019 20:45:45 +0000http://sustainabilitymath.org/?p=2625The Pew article, The most common age among whites in U.S. is 58, more than double that of racial and ethnic minorities by katherine Schaeffer (7/30/19) provides this graph of the distribution of age by race. Whites had a median age of 44, meaning that if you lined up all whites in the U.S. from youngest to oldest, the person in the middle would be 44 years old. This compares with a median age of...

]]>How much time do we spend on our phones?
https://sustainabilitymath.org/2019/08/22/how-much-time-do-we-spend-on-our-phones/
Thu, 22 Aug 2019 20:45:36 +0000http://sustainabilitymath.org/?p=2558The RescueTime blog post Screen time stats 2019: Here’s how much you use your phone during the workday? by Jory MacKay (3/21/2019) provides data on phone use. Note that Let’s start with the high-level stats. When we looked at the data of 11,000 users who actively use the RescueTime app, we found that most people, on average, spend 3 hours and 15 minutes on our phones. So, the data comes from users...

]]>How do we visualize changing temperature distributions?
https://sustainabilitymath.org/2019/04/15/how-do-we-visualize-changing-temperature-distributions/
Mon, 15 Apr 2019 20:46:31 +0000http://sustainabilitymath.org/?p=2353This recent video (3/29/19) by Robert Rohde shows how temperature distributions have changed. Each year the graph is a distribution of temperature anomalies. As noted “This essentially the same data that was previous shown as an animated map:” https://www.youtube.com/watch?v=JObGveVUz7k The video here is useful in any statistics or QL course and the two videos together provide an illustration of...

]]>What is the state of Arctic Ice?
https://sustainabilitymath.org/2019/04/11/what-is-the-state-of-arctic-ice/
Thu, 11 Apr 2019 20:45:03 +0000http://sustainabilitymath.org/?p=2350The melting season for Arctic Sea Ice has started with a quick drop in ice. The total ice is at a record low for this time of year (orange line in chart). But, how this plays out throughout the melting seasons is hard to predict based solely on past seasons. For instance, 2012 is the year of the record low (dashed line), but numerous seasons have been lower than 2012 at this time of year (2016...

]]>What’s new at sustainabilitymath?
https://sustainabilitymath.org/2019/04/04/whats-new-at-sustainabilitymath/
Thu, 04 Apr 2019 20:45:35 +0000http://sustainabilitymath.org/?p=2340There are three more interactive graphs on the Interactive Graphs page for a total of five. One is Arctic Sea Ice extent by year for the months of March (high month), June, September (low month), and December, along with regression lines and residual plots (snapshot here). The other two represent the expected years to live at a given age. One of these is by race and gender, while the other is all...

]]>0 to 6 or 1 to 7, Does it matter?
https://sustainabilitymath.org/2019/03/11/0-to-6-or-1-to-7-does-it-matter/
Mon, 11 Mar 2019 20:45:56 +0000http://sustainabilitymath.org/?p=2263The Decoded/Pew Research Center article On a scale from 1 to 10, how much to the numbers really matter? by Jonathan Evans reports on their experiment using a 0 to 6 scale and 1 to 7 scale. To carry it out, we randomly assigned respondents in France, Germany and the United Kingdom our political ideology question with one of two 7-point scales: either 0–6 or 1–7. The full question wording using our...

]]>What are the differences in the college aspirations of teens?
https://sustainabilitymath.org/2019/02/21/what-are-the-differences-in-the-college-aspirations-of-teens/
Thu, 21 Feb 2019 21:45:04 +0000http://sustainabilitymath.org/?p=2215Pew reports results of a detailed survey in their article Most U.S. Teens See Anxiety and Depression as a Major Problem Among Their Peers — For boys and girls, day-to-day experiences and future aspirations vary in key ways by Juliana Menasce Horowitz and Nikki Graf (2/20/19). Here, we highlight college aspirations: Girls are more likely than boys to say they plan to attend a four-year college (68%