[CTPP] estimating standard errors for 2000 CTPP data

I'm compiling some comparisons of 2006-08 ACS and 2000 Census data, and I'm looking for some guidance in estimating standard errors for 2000 CTPP tables. For the place of residence data, I have applied the estimation procedures outlined in the 2000 SF3 documentation: Unadjusted standard error: SE(Y) = sqrt(5*Y*(1-Y/N)), where N = size of publication area (total population) and Y = estimate of characteristic total This value is then multiplied by a design factor determined by the state, sample rate and characteristic. Are these methods also applicable to the workplace (CTPP part 2) tables? If so, what assumptions can I make about sample rates, and are the standard error design factors applicable to place of work statistics? Any advice will be greatly appreciated. ---------------------------------------------------- Paul Reim Chief Planner, Data Resources Central Transportation Planning Staff Boston Metropolitan Planning Organization 10 Park Plaza, Suite 2150 Boston, MA 02116-3968 Phone: (617) 973-8132 Fax: (617) 973-8855