how to judge a system no longer profitable?

I have read the thread by Eric and Acary

Eric's method is easy to use

Acary's method ,I don't know what is the z score he means

I can not find a table of z score or calculate formula
 
Quote from Hook N. Sinker:


<img src=http://wyll.oneplace.com/Subpages/FOOD%20FOR%20THE%20POOR-PIC%20OF%20HOUSE2.jpg \img>

Sweet!

Do suppose it's for sale? He probably wants too much for it, but I'd like to upgrade. Much nicer than mine... :p
 
Josean

you say HKFE offers minute data

but it is not cheap and I do not need tick data

I only need some minute data

of coz ,in return I will share some useful tools with you
 
I do not understand why you repeat what you have said in PM in the public forum. I have indicated I prefer to talk about this PRIVATELY.

Quote from robinxing:

Josean

you say HKFE offers minute data

but it is not cheap and I do not need tick data

I only need some minute data

of coz ,in return I will share some useful tools with you
 
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