hip, i.e., 1.86. When x changes by one unit at any point, y will

86 units accordingly. For instance, when x is changed from four

r one unit (delta in x or ߜݔ), y will move from 9.08 to 10.94. The

e between them is 1.86 (delta in y or ߜݕ). This constant

hip is maintained all the way no matter how the x variable

either in an interpolating way or in an extrapolating way.

he illustration of a linear regression model. ‘delta x’ stands for the change in the

and ‘delta y’ stands for the change in the y variable. The dots stand for the

ata while the solid line stands for a regression function (model) regressed from

d data using a regression analysis approach.

he illustration of a nonlinear regression model. ‘delta x’ stands for the change in

ble and ‘delta y’ stands for the change in the y variable. The dots stand for the

ata while the solid line stands for the regression model constructed on the

ata using a regression analysis algorithm.