Standard Deviation Answers

The average January surface water temperatures (°C) of Lake Michigan from 2000 to 2009 were 5.07, 3.57, 5.32, 3.19, 3.49, 4.25, 4.76, 5.19, 3.94, and 4.34. The data set has the following statistics:x = 4.3122 = 0.577What is the standard deviation? Round to the nearest thousandth.

X –0.577✔ 0.51920.5775.192

The average estimated hours a person in the United States spent playing video games per year from 2002 to 2012 were 71, 80, 82, 78, 80, 91, 107, 121, 125, 131, and 142.

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Which of the distributions is right skewed?