To view a stock market average, select a general market index such as the Dow Jones industrial average, view the associated historical charts, sum the range figures and divide by two, notes both the U.S. Securities and Exchange Commission and DailyFinance websites. Market indexes track a particular basket, or sector, of stocks and are representative of the U.S. economy as a whole.
Some of the common stock market indexes include the Dow Jones industrial average, the NYSE composite index, the S&P 500 composite stock price index and the Wilshire 5000 Total Market Index, reports the U.S. Securities and Exchange Commission. Investors can visit the CNN Money website to find the specific holdings within a broad market index and view the stock quote for a specific company to find the day's range. The sum of the two figures in the day's range, divided by two, represents the average stock price of that company for that day. Average volume is also available through the CNN Money website.
The DailyFinance website provides a stock quote for a market index. Investors can view the stock quote to find the 52-week range, explains DailyFinance. This range represents the highest and lowest prices of the stock index over the previous year. Add the two figures together in this range, and divide by two to arrive at the average stock price of this index over the most recent 52-week period.