The following data represent the monthly rate of return of Google common stock from its inception in January 2007 through October 2010.

(a) Determine and interpret the quartiles.
(b) Check the data set for outliers.

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-0.10 -0.02 0.00 0.0 0.10 0.03 0.04 0.15-0.08 0.02 0.01 0.180.100.18 0.14 0.070.01 0.09 0.03 0.10-0.17-0.10 0.05 0.05 0.08 0.08-0.07 0.06 0.25-0.07-0.02 0.10 0.01 0.09-0.07 0.17 0.05-0.02 0.30-0.14 0.00 0.05 0.06 -0.08 0.17