Question 1
Calculate the range of the following data set:
9, 6, 9, 2, 8, 10, 6, 6, 9
◦ 12
◦ 10
◦ 8
◦ 2
Question 2
The top speeds for a sample of five new automobiles are listed below. Calculate the standard deviation of the speeds. Round to four decimal places.
180, 100, 195, 130, 155
◦ 137.11
◦ 38.1772
◦ 243.3465
◦ 174.0675