On Empirical Rule 135 Review Worksheet for EXAM 2 Measures of Variability and Correlation motion of Sample ional - Shortcut Standard Deviation of Sample (Definitional) Sx = E(x2) _ (n) Sx =/ E(x-2)2 2. Using the mean and standard deviation of the estimated population calculated from the data N N Standard Deviation of Estimated Population Sample's Santard Deviation putational - Shortcut) Standard Deviation of Estimated Popu set in question 1, fill out the graph below (Definitional) SX = = (x ) -2 Sx = 2(-x)2 N-1 N-1 Population's Standard Deviation ce Standard Deviation of Population Sample's Standard Deviation: S. " Standard Deviation of Sample * mean of population s. . Standard Deviation of Estimated Population & a mean of sample 3. What is the mean? 1. You measure the temperature for the last 12 days. The temperatures in Fahrenheit have been the 4. What is the standard deviation (estimated population)? following: What is the 99.7% range? Case Correlation: Calculate the Pearson Correlation Coefficient between Time and Temperature. 6. What is the 68% range? #2 XY #3 #4 Temperature X . #5 Time #6 (in Minutes) #7 #8 #9 #10 79 #11 74 What is the mean? 42, 55, 64, 45, 48, 68, 69, 72, 73, 79, 74, 83 Total - 832 - 208 = 69. 33 of 12