The following dot plot represents two data sets, A and B. The mean of set B is about _ (40, 50, 30) higher than the means of set A, which is about _ (half, twice, the same as) the mean absolute deviation of either set.

30, half

Step-by-step explanation:

mean of A = (10*5+7*20+2*30+40+4*50+80)/20 = 28.5

mean of B = (2*20+40+5*50+3*60+8*70+80)/20 =57.5

difference =57.5-28.5 =29

mean absolute deviation = (the sum of every data point - mean)/total number

in this case,

MAD = 304/20 = 15.2

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step-by-step explanation:

maybe i can