小白编程请教坛子里大神~怎样计算股票收益率

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SAS作业求助啊啊啊，大神帮帮忙啊，跪下么么哒题目要求如下：

(1) compute the daily returnsduring the period of 2012.1.1 -2014.12.31，for all the individual stocks listedon the China A-share market;

(2) calculate the daily equalweighted and value weighted returns for large stocks, small stocks and thewhole A-share market during the same period.

Hints：

1.     Download the filesof daily trading information from CSMAR;

2.     Read the raw datainto SAS datasets;

3.     Stack thedatasets;

4.     Subset you datato exclude B-share firms;

5.     Sort the data by stockcode (stkcd) and trading date (Trddt);

6.     Calculate thedaily returns of individual stocks using the price adjusted for dividend andstock splits (Adjprcwd);

7.     Group the firmsinto large firms and small firms by their market values at the beginning of theyear, that is, large firms are those whose market values are greater than the samplemedian, and vice versa.

8.     Calculate thedaily equal weighted and value weighted returns for each group and the wholeA-share market.

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关键词：股票收益率 股票收益 收益率 information Individual 收益率 individual Download returns stocks

想让大家帮你至少你得有个案例数据

zxn2011 发表于 2015-11-15 23:24
想让大家帮你至少你得有个案例数据

谢谢前辈，请问您是说我下载好数据然后上传吗？

zxn2011 发表于 2015-11-15 23:24
想让大家帮你至少你得有个案例数据

你好，数据文件上传了，有excel和txt两种格式的，您用哪种方便用哪种~谢谢啦！！