What is the difference between the Moving Average method and the Weighted Moving

Average method?

c$.$ What is the effect of changing?:

i$.$ n$,$ the number of periods used for the average, in both the Moving Average and

Weighted Moving Average.

ii$.$ the wi$$s$,$ the weights on the periods, in the Weighted Moving Average

iii. $\backslash$alpha $,$ the exponentially weighted moving average smoothing constant

d$.$ Give some examples of unethical conduct involving forecasting.

$3.$ GE sells turbines for energy production. Monthly sales for a seven$-$month period were:

Month Sales $($Turbines$)$

Feb. $52$

Mar. $53$

Apr. $57$

May $48$

June $52$

July $54$

Aug. $49$

a$.$ Plot the monthly data. How do you interpret the nature of the variation in the graph?

b$.$ Forecast September demand using each of the following $($Show your work.$)$:

i$.$ A five$-$month moving average.

ii$.$ The naive approach.

iii. A weighted average using $0\mathrm{.}45$ for August, $0\mathrm{.}35$ for July, and $0\mathrm{.}20$ for June.

iv$.$ Exponentially weighted moving average, with the August forecast $=52,\backslash$alpha $=0\mathrm{.}35.$

$4.$ Using the following dataset $($Show your work.$)$:

Time Period Demand

July $27$

August $24$

September $19$