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136 b. Calculate the variance of sample using the computational formula C . Calculate and interpret the standard deviation of sample using the computational formula d. What is the standard deviation of sample using the definitional formula? e. Find the standard deviation (sx) of the estimated population if we were to find the standard deviation of the temperatures for all possible days in your city and interpret the results.135 Review Worksheet for EXAM 2 Measures of Variability and Correlation andard Deviation of Sample Standard Deviation of Sample (Definitionof SX = E(x2 ) _) = Sx = E(x-5) 2 N Standard Deviation of Estimated Population Sample's Santard Deviation Com Standard Deviation of Estimated Population onal - Shortcut (Definitional) SX = =(x) - = E(x-x) 2 S= N-1 N-1 Population's Standard Deviation Sample's Standard Deviation: o = Standard Deviation of Population S. = Standard Deviation of Sample H = mean of population S. = Standard Deviation of Estimated Population * = mean of sample following: 1. You measure the temperature for the last 12 days. The temperatures in Fahrenheit have been the Case OF #1 62 #2 55 #3 64 #4 65 #5 68 #6 68 #7 69 #8 72 #9 73 #10 79 #11 74 #12 83 a. What is the mean