Score: 0.5 of 1 Find the standard deviation, s, of sample data summarized in the frequency distribution table given below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 9.0. [E (Fox ? ) ] - [E( . x) ]? S= n(n - 1) Interval 20-29 30-39 40-49 50-59 60-69 70-79 O Frequency 5 18 38 16 6 4 . . .. . Standard deviation = (Round to one decimal place as needed.)