Finance, Forex and Investments

What are some typical relationships between different interest rates?

Are there any well known relationships between different interest rates? For example: The 20-year T-Bond rate is usually 2% above 3-month T-Bills. Stuff like that. Is there a website that would have things like that? It doesn't have to be just treasury security rates, it can be inflation rates, Federal Reserve interest rates, whatever. Thanks Are there some ratios between rates that indicate things about an economy?

Public Comments

1. they tend to go up and down together, longer maturities tend to have higher rates, but not always. A plot of rates against maturities is known as yield curve, and can be used to infer things about economy: http://en.wikipedia.org/wiki/Yield_curve