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 midpoints, F represent 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. interval/ 20-29/30-39/40-49/50-59/60-69/70-79 /80-89/
frequency/ 2/1/2/1/15/38/34/

standard deviation=___