Measures of Dispersion

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3 questions

A researcher counted the number of river otters observed on each acre of land in a state park.  {0, 10, 14, 6, 0, 8, 4}

What is the mean? _______ 
Standard deviation? _______ 
(round all values to 2 decimal places, if necessary)

Explain what the standard deviation means in this situation...IN CONTEXT!

_______ 

A golfer kept track of his scores for each round of a tournament: {78, 81, 86, 77, 75}

What is the mean? _______ 
Standard deviation? _______ 
(round all values to 2 decimal places, if necessary)

Explain what the standard deviation means in this situation...IN CONTEXT!
_______ 

A health club recorded the number of minutes that various members spent on the treadmill: {30, 30, 45, 20, 60, 30, 30, 15}

What is the mean? _______ 
Standard deviation? _______ 
(round all values to 2 decimal places, if necessary)

Explain what the standard deviation means in this situation...IN CONTEXT!
_______ 