An analyst wanted to predict the time required to complete a
construction project using four variables - size of the contract
?1x1 (in $1000 units), number of workdays adversely affected by the
weather ?2x2, number of subcontractors involved in the project
?4x4, and a variable ?3x3 that measured the presence ( ?3=1x3=1) or
absence ( ?3=0x3=0) of a workers' strike during the construction.
Fifteen construction projects were randomly chosen, and each of the
four variables as well as the time...