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Part $1$

Dell uses the CR $5$ chip in some of its laptop computers. The prices for the chip during the past $12$ months were as follows.

$$

Month

Price Per Chip

Month

Price Per Chip

January

$$$$1\mathrm{.}85$

July

$$$$1\mathrm{.}90$

February

$$$$1\mathrm{.}61$

August

$$$$1\mathrm{.}85$

March

$$$$1\mathrm{.}60$

September

$$$$1\mathrm{.}70$

April

$$$$1\mathrm{.}85$

October

$$$$1\mathrm{.}55$

May

$$$$1\mathrm{.}88$

November

$$$$1\mathrm{.}50$

June

$$$$1\mathrm{.}89$

December

$$$$1\mathrm{.}75$

This exercise contains only parts$$ a$,$ b$,$ and c$.$

Part $2$

$$a$)$ Using a$2-$month moving$$ average, the forecast for periods $11$ and $12$ is: $($Round your responses to two decimal$$ places.$)$

Month

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Forecast

$$$$1\mathrm{.}73$

$1\mathrm{.}61$

$1\mathrm{.}73$

$1\mathrm{.}87$

$1\mathrm{.}89$

$1\mathrm{.}90$

$1\mathrm{.}88$

$1\mathrm{.}78$

$$

enter your response here

$$

enter your response here

Part $3$

$$b$)$ Using a$3-$month moving$$ average, the forecast for periods $11$ and $12$ is: $($Round your responses to two decimal$$ places.$)$

Month

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Forecast

$$$$1\mathrm{.}69$

$1\mathrm{.}69$

$1\mathrm{.}78$

$1\mathrm{.}87$

$1\mathrm{.}89$

$1\mathrm{.}88$

$1\mathrm{.}82$

$$

enter your response here

$$

enter your response here

Part $4$

$$c$)$ The mean absolute deviationLOADING... based on a$2-$month moving average of March through December is $$$

$$

enter your response here. $($Round your response to three decimal$$ places.$)$

Part $5$

The mean absolute deviation based on a$3-$month moving average of April through December is $$$

$$

enter your response here.$($Round your response to three decimal$$ places.