Use This Information to Answer the Following Questions -Refer to the Table Above

question 36

Essay

Use this information to answer the following questions.
The following data,provided by the U.S.Bureau of Citizenship and Immigration Services,represent the number of immigrants admitted to the United States,in thousands,from 1990-2001.
$$\begin{array} { | c | c | } \hline \text { Year } & \begin{array} { c } \text { No. of Immigrants } \\\text { (in 000s) }\end{array} \\\hline 1990 & 1536 \\\hline 1991 & 1827 \\\hline 1992 & 974 \\\hline 1993 & 904 \\\hline 1994 & 804 \\\hline 1995 & 720 \\\hline 1996 & 916 \\\hline 1997 & 798 \\\hline 1998 & 654 \\\hline 1999 & 647 \\\hline 2000 & 850 \\\hline 2001 & 1064 \\\hline\end{array}$$
-Refer to the table above.
a.Use a 2-period moving average to forecast the number of immigrants in 2002.
b.Use a 3-period moving average to forecast the number of immigrants in 2002.
c.Which averaging period provides a better historical fit based on the MAD criterion?

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Definitions:

Queuing Theory

A body of knowledge about waiting lines.

Little's Law

A principle in queuing theory stating that the long-term average number of customers in a stable system L is equal to the long-term average effective arrival rate, λ, multiplied by the average time a customer spends in the system, W (L = λW).

Poisson Distribution

The Poisson Distribution is a statistical distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space if these events occur with a known constant mean rate and independently of the time since the last event.

FIFO

An inventory valuation method, "First In, First Out," where the oldest inventory items are recorded as sold first, ensuring that the inventory remains up-to-date.