$($b$)$ Using the least squares a seasonal$-$means plus linear time trend model was fitted to the log

transformed USA hotel occupancy time series data, i$.$e$.,$

using the following commands:

$>$ dummy$=$seasonaldummy$($hotel$)$

$>$ dummy

$>$ length$($hotel$)$

$>$ time.retail $=1$ :length$($hotel$)$

$>$ time.hotel

$>log.$ hotel. hotel