The next example illustrates the way in which PPSORT stratified the excessively 

 large elements (added to the same population used previously) into a stratum to be 

 measured with absolute certainty. 



ID EST. SIZE NO. OF UNITS TO 3E 



MEASURED = 4 



1 



80. OOOGO 



2 



82. OOOCO 



3 



93. 00000 





93.00000 



5 



95. OOOOO 



6 



105. OCCCO 



7 



109. 00000 



8 



109.00000 



9 



ii5.aocoo 



10 



13 0. OOOCO 



I I 



9)9. OOOCO 



SAMPLES DRAWN 



( NO. IN STRATUM ^ 10) 



{ NO. OF SAMPLES = 3) 



( TX = 0. 101 lOOOE 04 ) 



( TS = 0. 3359580E-03 ) 



( TP = 0. 8516406E 00 ) 



ID PROBABILITY 



11 O.IOOOOOOE 01 

 4 0.2 7 59644E 00 

 6 0.3 115721E 00 

 0.3412457E 00 



Notice that there are three samples, although four units are to be measured. 

 Consequently, the error components are exactly the same as in the previous example, 

 although the estimate of the population total is increased by the measured value of 

 the eleventh sample unit. 



11 



