Number of zero daily volumes in prior 12 months
还有这句number of no-trading days over the prior 365 trading days
谢谢 这两句话有本质的区别吗？
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Of course, there is a difference.
Within 12 months, there are typlcally 252 trading days, instead of 365.
365 trading days actually spreaded over about 1 year and 5 months in calendar terms.
[此贴子已经被作者于2008-12-27 10:39:59编辑过]
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