Arsenic is toxic to humans, and people can be exposed to it through contaminated drinking water, food, dust, and soil. Scientists have devised an interesting new way to measure a person€™s level of arsenic poisoning: by examining toenail clippings. In a recent study, scientists measured the level of arsenic (in mg/kg) in toenail clippings of eight people who lived near a former arsenic mine in Great Britain. The following levels were recorded:

(a) Do you expect the mean or the median of these toenail arsenic levels to be larger? Why?
(b) Calculate the mean and the median.

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0.8 1.9 2.7 3.4 3.9 7.1 11.9 26.0