Table B-4. Standard Errors of Estimated Numbers of Persons
                                
(Numbers in thousands)		
                                   Size of  Standard
Size of estimate  Standard error  estimate     error
				
200 ........................47.7    50,000     671.4
300 ........................58.4    80,000     779.7
600 ........................82.5   100,000     815.8
1 000......................106.4   130,000     825.3
2 000......................150.2   140,000     817.0
3,000......................183.6   150,000     802.7
5,000......................236.0   200,000     622.3
8 000......................296.6   220,000     467.2
1;,000.....................345.6   230,000     345.8
13,000.....................374.0 
15,000.....................400.0
17,000.....................424.0
22,000.....................476.9
26,000.....................513.7
30,000.....................546.6