03. Bivariate

Goals:

• Discuss the pie chart

• Talk a bit more about univariate data, specifically why the sd matters as much as the mean

  • 68-95-99.7 as a rule

  • 100% of the data underneath the curve

  • where does it all fit?

• Pets data: we can see the trend, but how do we explain it?

  • y = mx + b

  • differences in the line

• Manatee Data

  • time to boats

  • time to manatee deaths

  • boats to manatee deaths

• Data to be released tomorrow:

  • The employment situation: new one should be available 0830, March 4, 2016

    • http://www.bls.gov/bls/newsrels.htm#OEUS

    • http://www.bls.gov/web/empsit/ceseesummary.htm

    • http://www.bls.gov/news.release/empsit.t15.htm

    • http://www.bls.gov/web/empsit/cpseea10.htm

    • find your preferred place to talk about spin on this data

      • most news sites: CNN, Fox News, MSNBC, Politico

      • some right leaning sites: Brietbart, townhall.com

      • some left leaning sites: dailykos.com alternet.org

    • Your goal: be able to talk to EITHER side of the argument;

      • the economy got better over the past month;

      • the economy has gotten worse over the past month

      • you can use other data, but it should tie back to this.

      • be on the look out for people using super slimy ways of doing this.

    • Sites I've added since the first time you saw this page:

      • http://www.bls.gov/news.release/empsit.t16.htm

      • http://www.politico.com/story/2016/03/economy-added-242-000-jobs-in-february-220253

        • check the comments, beware the rude ones.

      • http://www.dailykos.com/stories/2016/3/4/1493725/-BLS-reports-242-000-new-jobs-created-in-February-U3-jobless-rate-stays-at-4-9-U6-falls-to-9-7

        • maybe the comments? didn't see a whole lot of actual discussion here.

      • http://www.usatoday.com/story/money/2016/03/04/employers-added-242000-jobs-feb/81290908/

      • http://www.drudge.com/news/196386/us-economy-adds-242000-jobs-unemployment

        • ...it's a scary world out there, so be careful.

      • https://www.reddit.com/r/politics/comments/48xfu6/us_economy_adds_242000_jobs_unemployment_at_49/

        • perhaps an even deeper rabbit hole.

Homework:

• Naked Stats: Chapter 4, Correlation

• Work with Data Released on Unemployment Data