预测方法是用过去一年那些和今天相似的交易日作参考, 他们下一个交易日价格的变动平均值作为明天股市价格变动的预测值。用过去一月股价的变动，我们可以算出一个股价的短期变动区间。在区间的底部做多，在区间的顶部做空，在区间的中部静观。当基本面有重大变化是，股价会走出现在的区间。统计方法也同样可以算出最佳交易入场时间点。
如果您过去买过这些ETF，您还可以回到那个时间点，找出是不是曾经犯过错误。
1.气 UNG, UGAZ, DGAZ
对UGAZ，过去一年有七个交易日和9/27相似，一天后UGAZ价动 -11.19% 到 +16.65%.均值 +4.5%。一周之后UGAZ的平均变动-1.16%。
UGAZ一天预测： +4.5%，UGAZ一周预测： -1.18%。
UGAZ预测细节 DGAZ预测细节
| Price Range | Action | |
|---|---|---|
| $32.04 - $34.25 | Strong Buy | |
| $34.25 - $34.89 | Buy | |
| $34.89 - $38.41 | Hold, or Take Profit | |
| $38.41 - $41.92 | Hold, or Take Profit | |
| $41.92 - $51.34 | Sell (Short) | |
| $51.34 - $52.34 | Strong Sell (Short) | |
UGAZ Tue. Sep. 27, 2016 close price $41.8600 (-2.26%).
2. 油 USO， UWTI， DWTI
UWTI一天预测： -1.89%.
| Price Range | Action | |
|---|---|---|
| $14.89 - $18.43 | Strong Buy | |
| $18.43 - $19.05 | Buy | |
| $19.05 - $21.12 | Hold, or Take Profit | |
| $21.12 - $23.19 | Hold, or Take Profit | |
| $23.19 - $24.83 | Sell (Short) | |
| $24.83 - $24.99 | Strong Sell (Short) | |
UWTI Tue. Sep. 27, 2016 close price $19.4800 (-7.5%).
3. GDX， NUGT， DUST
NUGT一天预测： -2.29%.
| Price Range | Action | |
|---|---|---|
| $12.59 - $17.8 | Strong Buy | |
| $17.8 - $18.62 | Buy | |
| $18.62 - $20.74 | Hold, or Take Profit | |
| $20.74 - $22.86 | Hold, or Take Profit | |
| $22.86 - $26.15 | Sell (Short) | |
| $26.15 - $26.49 | Strong Sell (Short) | |
NUGT Tue. Sep. 27, 2016 close price $18.6800 (-5.37%).
4. SPY， SPXS， SPXL
SPXL一天预测： -0.37%.
| Price Range | Action | |
|---|---|---|
| $88.01 - $91.69 | Strong Buy | |
| $91.69 - $92.46 | Buy | |
| $92.46 - $95.71 | Hold, or Take Profit | |
| $95.71 - $98.96 | Hold, or Take Profit | |
| $98.96 - $101.72 | Sell (Short) | |
| $101.72 - $101.99 | Strong Sell (Short) | |
SPXL Tue. Sep. 27, 2016 close price $96.2200 (1.82%).
