Multiplicative

$\backslash$table$[[$Seasonal Indexes,Value$],[$Index $1,1\mathrm{.}00],[$Index $2,1\mathrm{.}32],[$Index $3,1\mathrm{.}31],[$Index $4,1\mathrm{.}45],[$Index $5,1\mathrm{.}01],[$Index $6,0\mathrm{.}99],[$Index $7,0\mathrm{.}83],[$Index $8,0\mathrm{.}78],[$Index $9,0\mathrm{.}86],[$Index $10,0\mathrm{.}87],[$Index $11,0\mathrm{.}74],[$Index $12,0\mathrm{.}83]]$

The Winters model above

Multiple Choice

should only be used to forecast one month into the future.