Analisis FIFA World Cup Effect terhadap return dan volatilitas indeks harga saham gabungan (IHSG) di Bursa Efek Indonesia (BEI) periode tahun 1994, 1998, 2002, 2006, dan 2010 = Analysis of the FIFA World Cup effect on return and volatility in Jakarta composite index period I994, 1998, 2002, 2006, and 2010 at Indonesia Stock Exchange