Bogleheads:Sandbox

Trying to understand this table from Indexing vs. active management in the UK Reference placeholder:


 * Performance distribution

While some UK active funds out perform bench mark UK index funds, the range of dispersion in index fund performance (5 year returns ending 31/12/2011) is much lower than the range of active fund performance. Over this period, more active funds under perform the benchmark tracker funds than outperform them, and the range of under performance is generally larger than the range of out performance.