Which one of these statistics is unaffected by outliers?Mean Interquartile range Standard deviation Range

Consider the table below. x y -1 -5 0 5 1 11 2 13 3 11 complete the standard form equation representing the quadratic relationship displayed above, where a, b, and c are constants.

Ill mark the brainliest if you me with the these three questions 7,8,9

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b