The table below gives a stock fund€™s quarterly returns for the years 2003 to 2007. Are the results affected by the quarter of the year? Is the variability in the return from year to year statistically significant? State your conclusions using the α = 0.05 level of significance.

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Quarter Year First Second Third Fourth 2003-5.29 8.6 5.23 6.44 2004 4.96 1.06 0.25 6.32 2005 0 0.58 5.46 3.01 2006 5.30 0.82 4.81 6.54 2007 1.71 5.41924.78