The mean of 8, 9, 11, and 16 is 8+9+11+16 = 44 and 44/4 = 11 which is the mean average
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115/10 = 11.5
the mean is the average; (9 +8+4 + X)/4 = 8; solve for X ; (21 +X)/4 = 8; X = 11
0, 1, 4, 5, 6, 7, 8, 9, 9, 9, 11 mean = 6 and 3/11 median = 7 mode = 9
11
The median of a single number, such as 15915161681110, is itself.