many people have high IQ but not all of them are trading.
so, my question is "Whether high IQ it will affect the accuracy of one's decision making because to do Buy and Sell required the right decision-making, extensive analysis and detailed graph reading".
Being knowledgeable in trading is one of the factors that a day trader must have. A day trader must have a technique to be a successful trader and techniques need a lot of IQ. So yes, IQ affects the persons success in trading.