ADX (Average Directional Index): Important technical indicator that shows the strength of a trend. It is on a scale of 0 to 100. Index values above 40 indicate that the particular trend is strong, while values less than 20 indicates that a trend is weak. Please Note: It only shows the strength of the trend, NOT the Direction of the trend (Up or Down).
The other two indicators, Plus Directional Indicator (+DI) and Minus Directional Indicator (-DI), complement ADX by defining trend direction
RSI (Relative Strength Index):Important technical indicator which measures the magnitude of gains over a given time period against the magnitude of losses over that period. It is on a scale of 1 to 100. Some technical analysts believe that a value of 30 or below indicates an oversold condition and that a value of 70 or above indicates an overbought condition. It is NOT that relevant for trending stocks.