That sum is 84. Since it's only one number, its mean is also 84.
If those numbers were simply listed, without being added, then
their mean would be 16.8 .
Mean: 13.6 Median: 15 Mode: 16, 18, 15, 9, 10
16 + 16 + 18 + 18 = 68
6
mean(18, 23, 39, 10, 22, 17, 16, 15) = (18 + 23 + 39 + 10 + 22 + 17 + 16 + 15) ÷ 8 = 160 ÷ 8 = 20
3.33.3
Mean: 13.6 Median: 15 Mode: 16, 18, 15, 9, 10
16 + 16 + 18 + 18 = 68
(14, 15, 16, 16, 16, 18, 22, 25) Mode: 16 Mean: 17.75 Median: 16
16 + 16 + 16 + 17 + 18 + 18 + 18 + 19 + 19 + 20 + 20 + 20 + 21 = 238
15.
6
mean(18, 23, 39, 10, 22, 17, 16, 15) = (18 + 23 + 39 + 10 + 22 + 17 + 16 + 15) ÷ 8 = 160 ÷ 8 = 20
2+14=16
-16
32+14+20+18+16+31+21+16=168
3.33.3
8/9 + 5/6 = 16/18 + 15/18 = 31/18