%?求樣本方差
function?[E_XCV]=cvairance（Iarray）;
E_X=mean（Iarray）;
%?
SUM_1=0;
for?J=1:length（Iarray）
????SUM_1=SUM_1+Iarray（J）^2;
end
SUM_2=SUM_1/length（Iarray）;
CV=SUM_2-E_X^2;
%?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-08-04?09:04??Autocorrelation\
?????文件?????????192??2011-11-02?18:01??Autocorrelation\cvairance.m
?????文件????????2072??2011-09-20?19:41??Autocorrelation\DailyTest14.m
?????文件????????2010??2011-09-20?20:13??Autocorrelation\DailyTest14Desk.m
?????文件????????2981??2011-11-02?20:34??Autocorrelation\DailyTest20.asv
?????文件????????2908??2010-01-22?16:18??Autocorrelation\DailyTest20.m
?????文件????????1636??2010-01-22?16:06??Autocorrelation\DailyTest21.asv
?????文件????????1605??2010-01-23?20:20??Autocorrelation\DailyTest21.m
?????文件???????57729??2001-07-27?23:02??Autocorrelation\Fig3.35（a）.jpg
?????文件????????9506??2010-01-23?17:01??Autocorrelation\hs_err_pid2480.log
?????文件????????5632??2010-08-20?16:39??Autocorrelation\Thumbs.db