SEED WEIGHT AND GERMINATION 



271 



TABLE 1 



N 



NHD-J. 



CORRELATION AND 

 PROBABLE ERROR 



XHDD-J.. 

 XHDD-.M. 

 XDH-D... 

 XDH-E. . . 

 XDD-D . . 

 XDD-E. . . 

 XDDD-D. 

 XDDD-E. 

 XDHH-D. 

 XDHH-E. 



USS-I lOSo 



US8-K.... 



FSS-I 



FSS-L 



FSH-C. . . . 

 FSD-C. . . . 

 FSHH-C . . 

 FSDD-C . . 

 GGH-F.... 



77 



— 0 



OSS 





0 



076 



170 



— 0 



191 





0 



050 



209 



+0 



131 





0 



046 



676 



+0 



059 





0 



026 



817 



+0 



103 





0 



023 



1419 



+0 



053 





0 



018 



867 



— 0 



038 





0 



023 



1209 



+0 



029 



± 



0 



019 



176 



+0 



163 



± 



0 



050 



258 



+0 



077 





0 



042 



88 



+0 



Oil 





0 



072 



57 



+0 



107 



± 



0 



0S3 



387 



— 0 



025 





0 



034 



375 



+0 



095 



=fc 



0 



035 



514 



-0 



052 



± 



0 



030 



451 



+0 



112 



=4= 



0 



031 



lOSo 



+0 



047 



± 



0 



o:o 



1098 



+0 



101 



it 



0 



020 



700 



-0 



092 





0 



025 



1180 



+0 



035 





0 



020 



472 



+0 



066 



± 



0 



031 



232 



+0 



073 





0 



044 



867 



+0 



058 



± 



0 



023 



680 



-0 



035 





0 



026 



594 



+0 



076 





0 



028 



GGH-C... 



GGH-K.. 



GGH2-F.. 



GGH2-G.. 



GGHo-K . . 



GGD-F... 



GGD-G... 



GGD-K... 



GGD2-F . . 



GGD,-G.. 



GGDo-K.. 



GGHH-F. 



GGHH-G. 



GGHH-K. 



GGDD-F. 



GGDD-G. 



GGDD-K. 



LL-A 



LL-B 



LLS-A... 

 LLS-B... 

 LLS-H... 

 LLS-K... 



W-K 



GGS-L. . . . 



CORRELATION AND 

 PROBABLE ERROR 



191 



—0.133 



± 



0.048 



435 



+0.047 



± 



0.032 



425 



+0.047 





0.033 



348 



—0.008 





0.042 



341 



+0.099 





0.036 



222 



+0.022 



=t 



0 045 



121 



—0.245 



=fc 



0.058 



237 



+0.033 



zfc 



0.044 



401 



—0.016 



± 



0.034 



302 



+0.186 



± 



0.038 



.413 



—0.122 



± 



0.033 



303 



+0.053 





0.039 



116 



+0.138 





0.061 



292 



+0.132 



± 



0.039 



322 



+0.011 



=t 



0.038 



135 



-0.105 



=fc 



0.058 



329 



-0.102 



zfc 



0.037 



69 



+0.23S 



zfc 



0.077 



26 



+0.075 



zfc 



0.132 



365 



+0.260 



zfc 



0 033 



200 



+0.185 



zt 



0 046 



2207 



+0.408 



zfc 



0 012 



243 



+0.466 



zt 



0.034 



549 



+0.139 



zt 



0.028 



179 



+0.142 



zt 



0.049 



and negative deviations from zero are equal, the probable error 

 of an observed deviation for the present series is 



0.6745 1/50x0.5x0.5 =2.38 



The deviation of the actualh^ observed ratio, 36 : 14, from the 

 theoretical, 25 : 25, is thus 11 ± 2.38. This excess of 11 positive 

 coefficients out of a total of 50 — an excess of 44% over the 

 number to be expected if biologically there were no correlation 

 between weight and germination time — being over 4.5 times its 

 probable error is almost certainl}' significant. 



The evidence just presented for a real biological interdepend- 

 ence between seed weight and length of time required for ger- 

 mination is strengthened by a study of the individual constants. 



