The following are historical demand data: YEAR SEASON ACTUALDEMAND 2011 Spring 204 Summer 146 Fall 372

The following are historical demand data:

YEAR SEASON ACTUALDEMAND

2011 Spring 204

Summer 146

Fall 372

Winter 574

2012 Spring 474

Summer 276

Fall 690

Winter 955

Use regression analysis on deseasonalized demand to forecast demand in summer 2013. (Do not round intermediate calculations. Round your answer to the nearest whole number.)