These are indicators that help the trader to analyze charts and can be used by itself or as a helping tool in other strategies. Traders can make successful traders just by watching the price changes that are very obvious to them and drawing their horizontal levels. However, a better understanding of the horizontal levels in more complex charts helps them to spot trends that they would have otherwise missed.
It's important to remember when looking at forex that a higher currency makes a country's exports more expensive for other countries, while making imports cheaper. A lower currency makes exports cheaper and imports more expensive, so foreign exchange rates play a significant part in determining the trading relationship between two countries. There are a variety of factors at play in this relationship and they all contribute in some way to whether the strength of a currency declines or improves in relation to another. Understanding the influencing factors gives traders insights they can incorporate into their forex trading strategies. 

Fair Value strategy made use of in various financial markets. In the forex market, the fair value of a currency is determined based on the economic situation in a country. In order to use this forex strategy, traders must have an understanding about a few basic related to the economy, especially the GDP growth of the two economies whose currencies they plan to buy and sell. Other aspects to be considered include the unemployment rate and the inflation data.

To easily compare the forex strategies on the three criteria, we've laid them out in a bubble chart. On the vertical axis is ‘Risk-Reward Ratio’ with strategies at the top of the graph having higher reward for the risk taken on each trade. Position trading typically is the strategy with the highest risk reward ratio. On the horizontal axis is time investment that represents how much time is required to actively monitor the trades. The strategy that demands the most in terms of your time resource is scalp trading due to the high frequency of trades being placed on a regular basis.
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