A dentist is interested in finding out the relationship between the number of pieces of bubble gum a person chews and the number of cavities they have at their next appointment.The following data are from 5 patients.

Person Pieces of Bubble Gum Cavities Cross-Product (X) (Y) Mx = 85; SDx = 58.80 1 25 7 MY = 6; SDY = 2.45 2 104 4 3 47 7 4 73 9 5 176 3 E(X-MX)(Y -My)=-445 SSx = (X-Mx) =13830 SSy = >(Y -My)2 =24