Weight	Frequency
112.0 - 115.4	6
115.5 - 118.9	8
119.0 - 122.4	16
122.5 - 125.9	7
126.0 - 129.4	3

For the given data set, find the approximate sample standard deviation,rounded to 2 places of decimal. (We use the capacity of our calculators to handle grouped data to find the standard deviation in the same way we found the approximate mean of the grouped data at the top of page 33 of the courseware.)