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Sample Exercises for Dataset pwltsp.por

James Gerber, San Diego State University


© The Author, 1998; Last Modified 16 August 1998

1. Descriptive statistics

How does productivity (rgwxx) vary by continent?

2. Compare means

From the above output, it appears that Asia has higher productivity than South America. Let's test this by comparing the averages.

3. Correlation

Investment is one of the key determinants of living standards and economic growth. But not all investment is created equal. For example, another strip mall (non-residential construction) in Southern California probably will have less impact on economic growth than investment in factory machines (producer durables). Which forms of investment are associated with greater increases in percapita income?

4. Regression

Another way to think about the link between investment and GDP is to consider its impact relative to the impacts of consumption and government spending.

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