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

question 113

Short Answer

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,what is the exponentially smoothed value for the 12^th month using a smoothing coefficient of W = 0.25 if the exponentially smoothed value for the 10^th and 11^th month are 9,477.7776 and 9,411.8332,respectively?

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Definitions:

Pericycle

A layer of cells found just inside the endodermis of plant roots, important for initiating lateral root growth.

Cortex

The outer layer of an organ or structure, such as the brain’s cortex involved in many higher-level brain functions, or the cortex of plants responsible for storage and transport.

Pericycle

A layer of cells in plant roots that can give rise to lateral roots and is involved in secondary growth.

Endodermis

The innermost layer of cells in the cortex of a plant root, functioning as a selective barrier that regulates the passage of substances from the soil into the vascular system.