Find the standard deviation,'s, of sample data summarized in the frequency distribution table below by using the formula below, where i represents the class midpoint, I represents the class frequency, and n represents the total number of sample valica. Also, compare the computed standard deviation is the standard deviation obtained from the original list of data values, 11.1. [E(.) ]-[24-x] In- 1) Interval 20-20 30-30 40-49 50-59 60-59 TO-79 Frequency 2 15 Standard deviation (Round to one decimal place as needed.)