Question

The weekly salaries (in dollars) for 7 employees of a small business are given below. (Note that these are already ordered from least to greatest.) 362, 670, 678, 750, 820, 828, 953 Suppose that the $362 salary changes to $649. Answer the following. (a) What happens to the median? (b) What happens to the mean? It decreases by s[] It increases by s[] It stays the same. It decreases by s. It increases by 80 It stays the same. X ?

Answer 1

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al The data is 1,2,..., 7 362, 670, 678, 1 50, 820, 828, 953 median obs. 750 (**)th = 4th mean Exi = 723 구 now if 362 is changed to 649, then i=1,2,...7 new date is: Yi ; 670, 6 7 8 649, 750, 820, 828, 953. 4th obs. = 750 stays same meani again median Eyin - 764, sine yern, 7 mean increases by 1764–723)= 41 also, 41 = 649 - 362 7