Identify the Components of Simple Linear Regression Models and Discuss

question 11

Multiple Choice

Identify the components of simple linear regression models and discuss their applications Use the data given below to answer the following question(s) .
The worldwide sales of cars from 1981-1990 are shown in the table below. Given: α = 0.2 and β
= 0.15 (Hint: Use XLMiner) $$\begin{array} { | c | c | } \hline \text { Year } & \begin{array} { c } \text { Units sold in } \\\text { thousands }\end{array} \\\hline 1981 & 888 \\\hline 1982 & 900 \\\hline 1983 & 1000 \\\hline 1984 & 1200 \\\hline 1985 & 1100 \\\hline 1986 & 1300 \\\hline 1987 & 1250 \\\hline 1988 & 1150 \\\hline 1989 & 1100 \\\hline 1990 & 1200 \\\hline\end{array}$$
-Calculate the value of the mean absolute percentage error using double exponential smoothing for the given data.

• A) 1.80
• B) 8.10
• C) 91.27
• D) 11976.17

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Definitions:

Output Power

The amount of power, typically measured in watts, that a device, system, or process delivers to its load.

Open Delta

An open delta connection refers to a method of transformer connection used in electrical systems that employs two transformers to create a three-phase supply with a smaller capacity than a full delta connection.

Three-Phase Transformer

A type of transformer used in three-phase systems, consisting of three sets of primary and secondary windings, used to step up or step down voltages in power distribution.

Single Phase Loads

Electrical loads operating with a single phase power supply, characterized by the use of two wires: one power wire and one neutral wire.