Write them in ascending order: 3, 3, 7, 13, 15, 19, 45 The middle one of these seven numbers, 13, is the median.
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28
17 plus 15 plus 13 equals 45.
45 divided by 15 is 3
19, 20, 24, 25, 37, 45, 48, 57, 78, 88, 98 Mean: 49 Median: 45 Range: 79 There is no mode.
39/45 = (3*13)/(3*15) = 13/15