Store A: 130+80+169+199+80+249+179+95+110+179=1470 divide it by 10 since there are 10 data values. So store a has a mean of 140.
Store B:80+99+69+189+142+229+90+100+72+180=1250 divide it by 10 which is 125. Store B has a mean of 125.
Store A has a MAD of 48
Store B has a MAD of 48