The longer the better

Monday, August 30th, 2010

More is more in time series. The longer, the more we can see. And learn. For example: The States has never bought as many houses as in 2005. And since 1964 not as few as today.

US new home sales. - Source: Financial Times, 2010-08-23, page 20.
Source: Financial Times, 2010–08–23, page 20.

Less is less in time series. The shorter, the less we can see. And learn. For example: If shares are better than houses.

The Dax in the course of the day. - Source: FAZ, no. 198, 2010-08-27, page 24.The Dax in three months course. - Source: FAZ, no. 198, 2010-08-27, page 21.
Source: FAZ, no. 198, 2010–08–27, page 24 and 21.

Many is more in time series. The Dax series above and the one below were published in the same FAZ newspaper. I learn: At the stock exchange one often arrives at the same place.

The Dax is unsteady. - Source: FAZ, no. 198, 2010-08-27, page 21.
Source: FAZ, no. 198, 2010–08–27, page 21.

Many, different, long is the most in time series. Aha: People smoke less, but don’t pay less.

Sale of cigarettes in Germany, revenues and tax revenue. - Source: FAZ, no. 198, 2010-08-27, page 19.
Source: FAZ, no. 198, 2010–08–27, page 19.

Time: the longer the better, the more the better.