The US Women’s Swimming Team won the 1500 m relay at the 2016 Olympic Games. Here are the completion times, in seconds, for all eight teams that competed in the finals:

a. Calculate the sample variance and standard deviation.
b. If the observations were re-expressed in minutes, what would be the resulting values of the sample variance and sample standard deviation? Answer without actually performing the reexpression.

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233.13 235.00 235.01 235.18 235.49 235.66 236.96 239.50