The graph plots the 90 - day moving average market capitalization of bitcoin against its 90 - day realized volatility. (bitcoinmagazine.com)
Most other stock market indexes use a «weighted average market capitalization» system, in which more of the fund's money is invested in larger companies and less in smaller ones. (fool.com)
To get a weighted average market capitalization, this figure is multiplied by the percentage weight a company has in the index. (gobankingrates.com)