程序的主要功能是根据2001,2002年的股指,计算股市收益的周效应。附加了输入日期计算当日收益率和超常收益率的功能。由于每天的收益与该日为星期几有很大关系,程序还提供输入2001,2002年的日期,查询星期几的功能-procedures for the main functions of the 2001, 2002, according to the index, calculated the proceeds of the stock market cycle effects. Additional input the date and day yield extraordinary yield function. As the day proceeds with the date several weeks have great relations, procedures for the importation of 2001 and also the date for the function of several weeks