Step-by-step explanation:
1. mean = (68+3)/2 = 71/2
2. mean = (-4+8)/2 = 4/2 = 2
3. mean = (1/2+2)/2 = (5/2)/2 = 5/4
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Step-by-step explanation:
1. mean = (68+3)/2 = 71/2
2. mean = (-4+8)/2 = 4/2 = 2
3. mean = (1/2+2)/2 = (5/2)/2 = 5/4