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New Statistical Tool Identifies Predictable Economic Variables

Date:
July 23, 2009
Source:
North Carolina State University
Summary:
You don't need a crystal ball to tell you what is going to happen next in the economy. You need a statistical model. A new method can help researchers determine which economic variables they should focus on by identifying whether a variable can be predicted.

You don't need a crystal ball to tell you what is going to happen next in the economy. You need a statistical model. A new method from North Carolina State University can help researchers determine which economic variables they should focus on by identifying whether a variable can be predicted.

The new method could be a breakthrough for economists and statisticians, says Dr. Mehmet Caner, an associate professor of economics at NC State and co-author of the paper unveiling the new research. "This could lead to much great insight into the national and global economy by providing the impetus to develop new forecasting models for those variables that can be predicted," he says.

Currently, economists and statisticians use tools called "unit root tests" to determine whether an economic variable – such as unemployment – can be predicted. "The issue," Caner says, "is that unit root tests often say variables are unpredictable when they actually can be predicted.

"I think our method will show that many variables believed to be unpredictable are actually predictable," Caner says, "including currency exchange rates and gross domestic product."

Caner worked with Dr. Keith Knight, of the University of Toronto, to develop an entirely new method using new models to better differentiate between predictable and unpredictable economic variables.

The idea stemmed in part from the use of Bridge estimator models in medical research to identify sections of genetic code that may be related to disease. Caner and Knight saw that similar techniques could be used to determine which economic variables within an economic system might be predictable.

Caner will present the new research, "No Country for Old Unit Root Tests: Bridge Estimators Differentiate between Nonstationary versus Stationary Models and Select Optimal Lag," at the European Economic Association and Econometric Society European meeting being held in Barcelona, Spain, from Aug. 23-27.


Story Source:

The above story is based on materials provided by North Carolina State University. Note: Materials may be edited for content and length.


Cite This Page:

North Carolina State University. "New Statistical Tool Identifies Predictable Economic Variables." ScienceDaily. ScienceDaily, 23 July 2009. <www.sciencedaily.com/releases/2009/07/090721091824.htm>.
North Carolina State University. (2009, July 23). New Statistical Tool Identifies Predictable Economic Variables. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2009/07/090721091824.htm
North Carolina State University. "New Statistical Tool Identifies Predictable Economic Variables." ScienceDaily. www.sciencedaily.com/releases/2009/07/090721091824.htm (accessed September 2, 2014).

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