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...already got the answer, it seems there is fault in my method :(

Oh ic... variance between series

err, the group variance? Here is my workfile screenshot ... btw where is the spoiler button? http://i58.tinypic.com/5xtlaf.png group01 consist of num_1 until num_60 series, and group2 consist of num1 until num60 series. Each series contain 112 data, which are observation result from 112 companies on...

Hello, I'm using new to this program. My workfile is consisted of 120 series, which I divide into 2 groups (series 1-60 in groups 1 and series 61-120 in groups 2). The question is, how can I compare group variance of groups 1 and groups 2? Cause whenever I'm using test of equality somehow it just co...