Simplify the following text for a Grade 14 native English-speaking person.
Original: The Dow Jones Industrial Average , also referred to as the Industrial Average , the Dow Jones , the Dow 30 , or simply the Dow , is a stock market index , and one of several indices created by Wall Street Journal editor and Dow Jones & Company co-founder Charles Dow .
Simplified: The Dow Jones Industrial Average , also called the DJIA , Dow 30 , or informally The Dow Jones or The Dow ) is one of a few stock market indices created by nineteenth century Wall Street Journal editor and Dow Jones & Company co-founder Charles Dow .