TABLE 16-13 Given Below Is the Monthly Time-Series Data for U.S. Retail

question 104

Short Answer

TABLE 16-13
Given below is the monthly time-series data for U.S. retail sales of building materials over a specific year.

The results of the linear trend, quadratic trend, exponential trend, first-order autoregressive, second-order autoregressive and third-order autoregressive model are presented below in which the coded month for the first month is 0:




-Referring to Table 16-13, what is the p-value for the t test statistic for testing the significance of the quadratic term in the quadratic-trend model?

---

Definitions:

Inductance

The property of an electrical conductor by which a change in current in the conductor induces a voltage in both the conductor itself and in any nearby conductors by electromagnetic induction.

RLC Series Circuit

An electrical circuit consisting of a resistor (R), inductor (L), and capacitor (C) connected in a single line, forming a sequence of elements.

Power Factor

The ratio of the true power transmitted to a load to the apparent power in the circuit, indicating efficiency in electrical systems.

RLC Parallel Circuit

An electrical circuit consisting of a resistor (R), inductor (L), and capacitor (C) connected in parallel, affecting the circuit's impedance and frequency response.