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= |n[Σ(f•x?)]-[Σ«•x]2 n(n-1) Interval Frequency 30-39 1 Standard deviation = (Round to one decimal place as needed.) 40-49 2 50-59 8 C 60-69 2 70-79 18 80-89 29 90-99 35

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