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2008年1月21日 星期一

Statistic reference

STATA reference
UCLA:
Resources to help you learn and use Stata
Stata Portal

z-distribution
Java Normal Probability Calculator

Tom's Inflation Calculator
U.S. Retail Price Inflation (1666-2050)
U.S. Wage Inflation (1914-2007)
U.S. Medical-cost inflation (1936-2007)