Using the data given complete the forecasts using the following

$3$

methods For each calculate the mean absolute deviation

$($

MAD

$)$

What forecast method is best, why?

$2$

months

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table

$[$

$[$

Month

$,$

Pizzas,Forecast,

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table

$[$

$[$

Absolute

$]$

$,$

$[$

value of

$]$

$,$

$[$

error

$]$

$]$

$]$

$,$

$[$

$1$

$,$

$2$

$3$

$0$

$,$

$,$

$]$

$,$

$[$

$2$

$,$

$2$

$4$

$0$

$,$

$,$

$]$

$,$

$[$

$3$

$,$

$2$

$6$

$0$

$,$

$2$

$3$

$5$

$,$

$2$

$5$

$]$

$,$

$[$

$4$

$,$

$3$

$2$

$0$

$,$

$2$

$5$

$0$

$,$

$7$

$0$

$]$

$,$

$[$

$5$

$,$

$3$

$2$

$0$

$,$

$2$

$9$

$0$

$,$

$3$

$0$

$]$

$,$

$[$

$6$

$,$

$3$

$5$

$0$

$,$

$3$

$2$

$0$

$,$

$3$

$0$

$]$

$,$

$[$

$7$

$,$

$,$

$3$

$3$

$5$

$,$

$]$

$,$

$[$

$,$

$,$

$,$

$]$

$,$

$[$

sum of errors,

$1$

$5$

$5$

$,$

$,$

$]$

$,$

$[$

MAD

$,$

$3$

$8$

$.$

$2$

$5$

$,$

$,$

$]$

$]$