Table 3.4
Efficiencies and Conversion Factors for 2 to 10 Observations9
No. of Observations	Efficiency		Range Deviation Factor. KK	Range Confidence Factor (/)	
	Ol' Median. £«	Of Range, E„			
2	1.00	1.00	0.89	6.4	31.X3
3	0.74	0.99	0.59	1.3	3.01
4	0.84	0.98	0.49	0.72	1.32
5	0.69	0.96	0.4.1	0.51	0.84
6	0.78	0.93	0.40	0.40	0.63
7	0.67	0.91	0.37	0.33	0.51
8	0.74	0.89	0.35	0.29	0.43
9	0.65	0.87	0.34	0.26	0.37
10	0.7!	0.85	033	0.23	0.33
X	0.64	0.00	0.00	0.00	0.00
"Adapted from R. B. Dean and W. J Dixon, Anal. Chan., 13 (!951) 636.