An important element in market analysis and in the development of and testing for trading systems is understanding the information you are using. Technical analysis and trading systems are dependent upon that data that they employ. If you don’t know what you are putting in to your work, you cannot be sure of the validity of the output. There are two primary ways you will see and/or receive price quotes. One will be in the form of traded quotes. That means actual prices at which transactions took place. Generally, this...