A statistical clerk calculated the mean and variance of a data set with n = 40....

  

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A statistical clerk calculated the mean and variance of a data set with n = 40. The results are x 100 and s² = 49. Let x; represent in general the data in the data set. Question 1: Compute Exi. 1 Question 2: Compute Ex. 1 Now, suppose that instead of entering the datum = 12 with frequency = 21, the statistical clerk mistakenly entered datum = 21 with frequency = 12. The objective is then to find information of the correct(ed) data set. Question 3: Find the corrected Σx₁. 2 Question 4: Find the corrected frequency. 2 Question 5: Find the corrected mean. 2 A statistical clerk calculated the mean and variance of a data set with n = 40. The results are x 100 and s² = 49. Let x; represent in general the data in the data set. Question 1: Compute Exi. 1 Question 2: Compute Ex. 1 Now, suppose that instead of entering the datum = 12 with frequency = 21, the statistical clerk mistakenly entered datum = 21 with frequency = 12. The objective is then to find information of the correct(ed) data set. Question 3: Find the corrected Σx₁. 2 Question 4: Find the corrected frequency. 2 Question 5: Find the corrected mean. 2

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Let n 40 X 100 S 49 X n 1 Xi n X 40 100 4000 2 xix2 S X2 n n xi nS ... View the full answer