It is difficult to predict the bitcoin price accurately. However, one method that can be used to predict bitcoin prices is by using a combination of fundamental and technical analysis. although not 100% accurate, this method is at least more effective than predicting from a graph.
If you are an expert trader this maybe true, but for a newbie trader it is better that they just keep things simple, if they do not then they will take a huge risk as it is easy to make mistakes when your strategy to predict the markets is too complex, and what is worse if they are unable to correct their mistake in time it is completely possible they will lose a significant amount of their money before they realize what it happened.