12
All of the numbers appear once and as a mode is the most commonly occurring number, there is no mode.
The mode is 16.
6, 10, 11, 12, 14, 14, 15, 22 mean: 13 median: 13 mode: 14 range: 16
12, 14, 15, 16, 16, 17 The median is 15.5 The mode is 16 The range is 5 The mean is 15
14 appears more than any number, so it is the mode.
13/13 + 12/14 = 13/7 or 16/7
14
One possibility: 5, 6, 7, 7, 7, 12, 12, 13, 14, 15, 16, 18
There are probably tens of such sets. Some are: 5, 6, 7, 7, 8, 11, 13, 14, 15, 16, 17, 18 5, 6, 7, 7, 7, 12, 12, 14, 15, 16, 17, 18 5, 6, 7, 7, 7, 12, 12, 14, 14, 16, 17, 18 5, 6, 7, 7, 7, 12, 12, 14, 14, 15, 17, 18 5, 6, 7, 7, 7, 12, 12, 14, 15, 15, 17, 18 5, 6, 7, 7, 7, 12, 12, 14, 15, 16, 16, 18 5, 6, 7, 7, 7, 12, 12, 14, 14, 16, 16, 18
Mean = (15 + 12 + 16 + 13)/4 = 56/4 = 14
There is no mode because no number is repeated more than once.
12 13 14 * * * * * 12 + 13 + 14 = 39, not 45. The correct answer is 14, 15 and 16.