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1 .4 5 2 2 99 1.6450 9 9 .5 1 .8 2 1 4 00 + QrO (64) Thus "v" In No, (b l) above can be regarded as an in d ir e c t measure of the cum ulative frequency on the lognormal cu rv e, and th e r e la t io n between th ese two q u a n titie s can be e s ta b lis h e d d i r e c t ly from any s e t of ta b le s of areas o f the Normal Curve.*Thus w c fu n c tio n o f cum ulative frequency (wnich, from N o .(60))" a V2 lo g x -a n /F lo g m + ^ (63) or -2-= a lo g x -a log m + A-..... V 2 This eq u a tio n i s a s tr a ig h t l in e formula of the type Y * KX + C whereY = ^= , X * lo g x , K * "a," determ ines the slo p e o f the lin e and C " (fi--a lo g m), i s a con stan t * in te r c e p t on Y a x is .As w i l l bo shown t liir lead s n a tu r a lly to a sim ple g ra p h ica l s tr a ig h t li n e f i t for the lognormal curve. 2 .Logarithm ic rt'Q b a b illty_Paper.Table 5 reflects the valu es fo r cum ulative fr e q u e n c ie s corresponding to v a lu e s computed from ta b le s of a rea s o f the normal curve?*and from Nos. (61) arw (62) above.Thus i f the v alu es are p lo tte d as a o s c is s a e on ordinary graph paper, the corresponding v a lu es o f the cumula t iv e frequ ency p ercen t can be marked o f f on t h is s c a le as i l l u s t r a t e d in Diagram No. 3.*** Nowf Ly taklng a 1o* * | rlth m ic s c a le fo r th e o rd in a tes as in d ic a te d , the logarithm s o f the gold v a lu es corresponding to the va rio u s cum ulative fr e q u e n c ie s as ob served , can be p lo tt e d , and should for a true lognorm al d is t r ib u t io n r e s u lt in the s tr a ig h t lin e oi e q u a t io n /.. .