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[amibroker] combining stats in multiple backtest reports



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Hello,
 
If I have a series of backtest reports that cover 
multiple contiguous time frames, how do I group them together to get a single 
total performance summary ? 
 
For some backtester stats, I understand that they 
the avg or sum or max/min value should, but for others I'm not sure.  I've 
pasted all the stats below.  Can someone fill in the gaps and correct me if 
I've made a mistake ?
 
Thanks,
HB
 

<TABLE  cellSpacing=0 
cellPadding=0 width=293 border=0 x:str>
  
  <COL  
  width=229>
  
  
  
    <TD 
     
    width=229 height=17>Initial capital
    <TD 
     
    width=64>n/a
  
    <TD 
     
    height=17>Ending capital
    <TD 
    ><FONT 
      face=Arial size=2>n/a
  
    <TD class=xl24 
     
    height=17 x:str="Net Profit"><SPAN 
      > Net Profit<SPAN 
      > 
    <TD 
    ><FONT 
      face=Arial size=2>sum
  
    <TD 
     
    height=17>Net Profit %
    <TD 
    ><FONT 
      face=Arial size=2>n/a
  
    <TD 
     
    height=17>Exposure %
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Net Risk Adjusted Return %
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Annual Return %
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Risk Adjusted Return %
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD 
     
    height=17>
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD 
     
    height=17>All trades
    <TD 
    ><FONT 
      face=Arial size=2>sum
  
    <TD 
     
    height=17><SPAN 
      > Avg. Profit/Loss
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17><SPAN 
      > Avg. Profit/Loss %
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17><SPAN 
      > Avg. Bars Held
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17>
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD 
     
    height=17>
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD 
     
    height=17>Winners
    <TD 
    ><FONT 
      face=Arial size=2>sum
  
    <TD 
     
    height=17><SPAN 
      > Total Profit
    <TD 
    ><FONT 
      face=Arial size=2>sum ?
  
    <TD 
     
    height=17><SPAN 
      > Avg. Profit
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17><SPAN 
      > Avg. Profit %
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17><SPAN 
      > Avg. Bars Held
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17><SPAN 
      > Max. Consecutive
    <TD 
    ><FONT 
      face=Arial size=2>max ?
  
    <TD 
     
    height=17><SPAN 
      > Largest win
    <TD 
    ><FONT 
      face=Arial size=2>max ?
  
    <TD 
     
    height=17><SPAN 
      > # bars in largest 
    win
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD 
     
    height=17>
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD 
     
    height=17>Losers
    <TD 
    ><FONT 
      face=Arial size=2>sum
  
    <TD 
     
    height=17><SPAN 
      > Total Loss
    <TD 
    ><FONT 
      face=Arial size=2>sum ?
  
    <TD 
     
    height=17><SPAN 
      > Avg. Loss
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17><SPAN 
      > Avg. Loss %
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17><SPAN 
      > Avg. Bars Held
    <TD 
    ><FONT 
      face=Arial size=2>avg ?
  
    <TD 
     
    height=17><SPAN 
      > Max. Consecutive
    <TD 
    ><FONT 
      face=Arial size=2>max ?
  
    <TD 
     
    height=17><SPAN 
      > Largest loss
    <TD 
    ><FONT 
      face=Arial size=2>max ?
  
    <TD 
     
    height=17><SPAN 
      > # bars in largest 
    loss
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD 
     
    height=17>
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD 
     
    height=17>Max. trade drawdown
    <TD 
    ><FONT 
      face=Arial size=2>max ?
  
    <TD 
     
    height=17>Max. trade % drawdown
    <TD 
    ><FONT 
      face=Arial size=2>max ?
  
    <TD 
     
    height=17>Max. system drawdown
    <TD 
    ><FONT 
      face=Arial size=2>max ?
  
    <TD 
     
    height=17>Max. system % drawdown
    <TD 
    ><FONT 
      face=Arial size=2>max ?
  
    <TD 
     
    height=17>Recovery Factor
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>CAR/MaxDD
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>RAR/MaxDD
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Profit Factor
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Payoff Ratio
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Standard Error
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Risk-Reward Ratio
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Ulcer Index
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Ulcer Performance Index
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>Sharpe Ratio of trades
    <TD 
    ><FONT 
      face=Arial size=2>?
  
    <TD 
     
    height=17>K-Ratio
    <TD 
    ><FONT 
      face=Arial size=2>?


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