Lattice Insight, LLC
​Mathematical Statistics Consulting
Follow/Contact
  • Home
  • About
  • Projects
  • Contact
  • Blog

From data to decisions

Let a professional mathematician and statistician help you make evidence-based decisions.

Download our presentation

Measuring GDP change: are we in a recession?

5/31/2015

0 Comments

 
Picture
How do we know whether we're really economically miserable? The official definition of a recession is two or more consecutive quarters of negative GDP growth. As long as GDP grows by even one dollar during the quarter, that interrupts any recession that might be taking place - officially speaking.

However, reality is more complex. That one dollar growth in production does nothing to improve the well-being of people if prices and/or population have risen during that quarter - and usually they both do increase. A 0.1% increase in your income is a decrease in practical terms if prices have risen by 1%, or if that income is shared by more people.

The graph above shows data downloaded from FRED, the research arm of the St. Louis Federal Reserve Bank. The blue curve is the annualized percent change in raw GDP - the official number, reported by the media. The orange curve is the much more important number, adjusted for price increases and population increases. According to the orange curve, the 2008-2009 recession was four quarters long, not three. 2011Q1 and 2012Q4 were contractions as well according to the orange curve.

As far as we know at this time, we are not yet in a recession. The second quarter will shed more light on this question.
0 Comments

Your comment will be posted after it is approved.


Leave a Reply.

    Author

    Hal M. Switkay, Ph.D. is a professional mathematician and statistician.

    Archives

    December 2020
    September 2020
    August 2020
    July 2020
    May 2020
    April 2020
    September 2019
    August 2019
    May 2019
    December 2018
    January 2017
    October 2016
    August 2016
    June 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    October 2015
    September 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015

    Categories

    All

    RSS Feed

Web Hosting by MyDomain
Website contents copyright Lattice Insight, LLC, 2015. All rights reserved.