WLS cost WITH sqft inorout yrexp
/SOURCE sqft
/POWER 0 TO 5 BY 0.5
/CONSTANT
/SAVE WEIGHT
/PRINT BEST.
- This command specifies a weighted least-squares regression
in which cost is the dependent
variable and sqft, inorout, and yrexp are the independent variables.
- The
SOURCE subcommand
identifies sqft as the source of
heteroscedasticity.
- The
POWER subcommand
specifies that several equations will be fit, one for each value from
0 to 5, incrementing by 0.5. Weights will be calculated using sqft.
- The
SAVE subcommand
requests that the weights that maximize the log-likelihood function
be saved to the active dataset.
- All other options are set to their default values.