（02）运用指标ATR来筛选适合长线投资或短线交易的股票；举例KO, TVIX
简单的算术，运用股票分析指标ATR来筛选适合长线投资或是短线交易的股票。混淆投资和交易的策略，会导致身心和对工作以及人生的影响。
1. If you are position or intermediate trader, you are looking for 1-2% ratio. You are looking a slow, steady mover and not let the volatility drive you crazy.
2. If you are swing trader, you are looking for 3-5% ratio. You hold a stock for couple days and grab a piece （e.g. 5%) and exit the trade.
3. If you are day trader, you like this ratio bigger (10-15%) to maximize your profit.