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The mean is 8 because: (1+6+10+11+12)/5=8 We know that the Arithmetic Mean of a data set = (sum of all the items)/ number of items. =(1+6+10+11+12)/5 =(40)/5 =8. The Arithmetic Mean of 1, 6, 10, 11, and 12 is 8.
8*(6-5)12 = 8
102.76
There are infinitely many sets that will satisfy the requirements. Three examples are: {0, 6, 8, 8, 8} {2, 6, 6, 6, 10} {√3, 5, 5, 12-2*√3, √3+8}
It is: 8+8+8+5+6 = 35 and 35*5 = 7 which is the mean