Standard Deviation of this data

HW Score: 5 0.19%, 42.66 of 85 pts 3.2.37 Question Help Find the standard deviation, s, of sample data summarized in the frequency distribution table 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, 11.1. S = " [ E (r . x 2 ) ] - [E (f . x )] n(n - 1) Interval 30-36 37-43 44-50 51-57 58-64 65-71 72-78 Frequency m N N Standard deviation = (Round to one decimal place as needed.) Enter your answer in the answer box and then click Check