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For the following actual annual closing prices of several stocks indices, find the average return and standard deviation of returns. We ignore dividends paid. NIKKEI 225 10542.62 Date 31 Dec 2001 31 Dec 2002 31 Dec 2003 31 Dec 2004 31 Dec 2005 NIFTY 50 1059.05 1093.50 1879.75 S&P 500 1148.08 879.82 1111.92 FTSE 100 5217.40 3940.40 4476.87 8578.95 10676.64 2080.50 1211.92 4814.30 11488.76 2836.55 1248.29 5618.76 16111.43