SCENARIO 16-13 Given Below Is the Monthly Time Series Data for U.S.retail

question 7

True/False

SCENARIO 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 1^st month is 0:
Linear trend model:

Quadratic trend model:
Third-order autoregressive::

Below is the residual plot of the various models:

-Referring to Scenario 16-13,you can reject the null hypothesis for testing the appropriateness of the second-order autoregressive model at the 5% level of significance.

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Definitions:

ADHD

Attention Deficit Hyperactivity Disorder, a neurodevelopmental disorder characterized by patterns of inattention, impulsivity, and hyperactivity.

Specific Learning Disorder

A type of neurodevelopmental disorder that hinders the ability to learn or use specific academic skills, such as reading or mathematics.

Autism Spectrum Disorder

A developmental disorder characterized by difficulties in social interaction, communication, and by restricted and repetitive behaviors.

Multifinality

The principle in developmental psychology that similar early experiences can lead to different outcomes in individuals.