mean(18, 23, 39, 10, 22, 17, 16, 15) = (18 + 23 + 39 + 10 + 22 + 17 + 16 + 15) ÷ 8
= 160 ÷ 8
= 20
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(0, 2, 15, 16, 17) 0+2+15+16+17 = 50 50/5 = 10 The median is 15, the mean is 10.
(21+15+19+28+10+17+9+15+26+14+10+18+24+12+16) / 15 = 16.93 recurring (that is, 16.93333...)
12, 14, 15, 16, 16, 17 The median is 15.5 The mode is 16 The range is 5 The mean is 15
16
The numbers are, 12 13 16 17 17