There is an infinite number of data sets that have a mean of 8. One such set is 7, 8, 9.
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total marks of data set 1 is 6 x 8 = 48 total marks of data set 2 is 6 x 20= 120 now, the total mean of the combined data set is = (48 + 120) / (6 + 6) = 168 / 12 = 14
The mean is 8.
7
The mean of a set of data is the sum of that data divided by the number of items of data.
when you have a data set, the number that occurs the most often is the mode.Example: 2,3,3,3,4,4,4,5,6,8,8,8,8,8,8,8,8,8,8,8,8,8,10,11,13 the mode is 8.