Volume is to be discarded as it is useless information. Volume has little or no discernible impact on price.Volume has HUGE impact on how markets move. Usually low volume means low volatility as well. No volatility = no opportunity fo you to make money. But on the other hand market makers can do with the market almost anything during low volume because they don´t have to fight through all the limit orders. It is easy for them to move the market back and forth. This environment creates situation where when you enter the trade you risk a lot because of the strange quick movements caused by MMs and on the other hand the potential for your profit is low because of low volatility.