QUESTION $24$

Demand data from past three years are given as:

$\backslash$table$[[$Year$,$Spring,Season,Winter$],[$Summer$,$Fall$],[$Three years ago,$18,10,26,42],[$Two years ago,$26,18,34,50],[$Last year,$34,26,42,58]]$

$$

QUESTION $25$

Demand data from past three years are given as:

$\backslash$table$[[$Year$,$Spring,Season,Winter$],[$Summer$,$Fall$],[$Three years ago,$18,10,26,42],[$Two years ago $/,26,18,34,50],[$Last year,$34,26,42,58]]$

Assume that the linear regression trend line for these data is for spring, three years ago$),$ what is the demand forecast of this year?

$44\mathrm{.}96,47,29,49\mathrm{.}62,51\mathrm{.}59$

$32\mathrm{.}35,23\mathrm{.}68,41\mathrm{.}71,63\mathrm{.}61$

$40\mathrm{.}81,29\mathrm{.}49,51\mathrm{.}36,77\mathrm{.}51$

$41\mathrm{.}71,32\mathrm{.}06,53\mathrm{.}16,75\mathrm{.}12$