Which of the following is NOT considered a valid trading system approach according to the text? Option: Mimicking trades seen on television, Following a friend's trading advice, Systematic deduction, Trading based on personal intuition

Which of the following is NOT considered a valid trading system approach according to the text?

What is the primary focus of the trading module discussed in the text?

What is the term used to describe a quantitative approach to trading that relies on equations and numbers?

What is the author's perspective on the effectiveness of trading systems?

What is the key element that distinguishes a trading system from other trading approaches?

Which of the following is NOT listed as a method for developing a point of view in the stock market?