if s = { 1 , 2 , 3 , 4 , 5 , 6 , 7 } , how much less is the mean of the numbers in s than the median of the numbers in s ?
"mean = ( 1 + 2 + 3 + 4 + 5 + 6 + 7 ) / 7 = 4 median = 4 difference = 4 - 4 = 0 option a"
multiply(divide(add(add(add(add(add(2, 1), 3), 4), 5), 6), add(const_2, const_4)), divide(add(3, 4), const_2))