A polynomial trend model that only allows one change in the direction of a series is known as a(n) ________.
A) exponential trend model
B) linear trend model
C) cubic trend model
D) quadratic trend model

Question

Quizplus · Accepted Answer

A quadratic trend model is characterized by a polynomial of degree 2, which allows for one change in the direction of the series, representing a single curve in the graph.

A Polynomial Trend Model That Only Allows One Change in the Direction