Statistical Software gives us the following Equation salary3

Statistical Software gives us the following Equation

salary=3.3-1.25Age+2.1Agesquared

this model is

A Second Order with One Predictor Variable

Solution

Hi,

First let us see what are first order or second order models.

These are polinomial models with the single or squared degree.

For instance, y = a is a first order model

where as y = a² is a second order.

Thus the first answer to your question is its a second order model.

Now we can see only one variable which needs to be find to get the value of salary and that variable is age.

Thus its a one predictor model.

Thus the answer to this question is (A)- Second order with one predictor model.