Answer
mode: none since all numbers appear once
median: 109.5 kg
mean: 109.625 kg
range: 19 kg
Work Step by Step
$85, 103, 94, 97, 88, 91, 104, 95$
$85, 88, 91, 94, 95, 97, 103, 104$ (add 15 to all numbers)
$100, 103, 106, 109, 110, 112, 118, 119$
mode -- none since all numbers appear once
range:
$119-100 = 19$
median:
$100, 103, 106, 109, 110, 112, 118, 119$
$103, 106, 109, 110, 112, 118$
$106, 109, 110, 112$
$109, 110$
$109+110= 209$
$219/2 = 109.5$
mean:
$(100+103+106+109+110+112+118+119)/8$
$877/8$
$109.625$