单项选择题

One of the assumptions of technical analysis is:

A. all analysts have all current information.
B. security prices move in random fashion.
C. supply and demand are driven by rational and irrational behavior.

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单项选择题A basic assumption of technical analysis in contrast to fundamental analysis is that:

A. security prices move in patterns, which repeat over long periods.
B. aggregate supply of and demand for goods and services are key determinants of stock value.
C. a stock’s market price will approach its intrinsic value over time.

单项选择题Which of the following is the best method to avoid data mining bias when testing a profitable trading strategy

A. Increase the sample size to at least 30 observations per year.
B. Test the strategy on a different data set than the one used to develop the rules.
C. Use a sample free of survivorship bias.