They would typically have some sort of formal post secondary education. People with money have to have a good grasp on statistics and finances, both courses that you take in PS. Someone who isnt well educated isnt as likely to manage their businesses or money as well as someone who is. Not to say, of course, that you need to be in order to be wealthy- both my parents own and manage a few extremely successful businesses that started from nothing and my father doesnt even have a high school diploma,lol