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Americans Drove Less in 2005

antifoidulus writes "CNN is reporting on a study that shows that not only did Americans buy more fuel efficient vehicles in 2005 (although sadly this trend reversed itself in the later half of 2006) but they also drove slightly less on average, according to the article, 'The drop in driving was small — the average American drove 13,657 miles (21,978.8 km) per year in 2005, down from 13,711 miles in 2004.' This is the first drop since the energy crisis of the late 70's. However, although SUV and mini-van sales have been falling, they still represent over half of the private vehicle sales in the United States."

6 of 569 comments (clear)

  1. Those are americans? by Rufus211 · · Score: 5, Insightful

    What state has a wide yellow license plate with no graphics? And what's the circular road sign with a red border?

  2. This is because... by Cyno01 · · Score: 5, Funny

    People are going out to less movies because of wait for it... PIRACY!!!

    --
    "Sic Semper Tyrannosaurus Rex."
  3. Wow... by mofomojo · · Score: 5, Funny

    I didn't know CNN did reporting.

  4. Leap year by Anonymous Coward · · Score: 5, Insightful

    The difference is so small that it's almost totally explained by 2004 being a leap year.

  5. Error analysis by Luzumsuz+Lazim · · Score: 5, Informative

    It is amazing that how news reporter are so illiterate when it comes to math and science. The figures they report indicates no conclusive reduction (change) in driving habits at all. When we measure a quantity there is always some error in that measurement. Driving habit is pretty much a random event when average over millions of people. Thus, a good approximation (I don't claim it to be the most accurate) of its associated error is 1/sqrt(x), and thus x +- x/sqrt(x) is a proper way for indicating the average x. In this specific case, it is 13600 +- ~110. Thus the change (~50) is smaller then a sigma away from the average. The proper way to report this would be: Americans don't care about the environment, and they have the money to burn the same amount of fossil fuel as they did last year.

  6. Re:Statistical Noise by erikus · · Score: 5, Insightful
    Hmm, it looks like you missed this paragraph:
    Growth in U.S. demand for gasoline slowed from an average 1.6 percent per year between 1990 and 2004 to 0.3 percent in 2005 and 1 percent in 2006, the report said.
    Your 0.3% is right on, but it's consistently been 1.6% in the years before. Now are you sure it's noise?