The median is the number in the middle - same number of places from either left or right. You have 7 numbers, so median is the 4th from either side - the median is 9
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8. In order: 4, 6, 7, 9, 10, 12 6 data items so median is mean of middle two: median = (7+9)/2 = 8.
Median of the set = arithmetic mean of 8 and 9 = 8.5
8
It is 9.
Median: 8 Mode: 8, 9 Range: 6