Use the Data Given Below to Answer the Following Questions)

question 39

Multiple Choice

Use the data given below to answer the following questions) .
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

---

Definitions:

Echinoderms

Echinoderms are a group of marine invertebrates that include sea stars, sea urchins, and sand dollars, characterized by radial symmetry and a unique water vascular system.

Pseudocoelom

A fluid-filled body cavity lying between the intestines and outer body wall that is only partially lined with mesoderm in some invertebrates.

Mesoderm

The middle germ layer of the early embryo; gives rise to connective tissue, muscle, bone, blood vessels, kidneys, and many other structures. Compare with ectoderm and endoderm.

Coelom

refers to the body cavity in animals that is lined by mesoderm tissue, separating the digestive tract from the outer body wall.