380 



MR. S. M. JACOB ON 



Table showing the values of the ' probable error' of the coefficient of correlation 'r' , 

 together with its five- figure logarithms and their first differences for n = 20. 



r 



Ey 



A] 



log E r 



Ai 



r 



Ey 



14 



lOg Ey 



A, * 





Ey 



Ai 

 22 



lOg Ey 



Ai 



■20 



•1448 



1 



6 



1-16073 



186 



47 



■1175 



I - 07005 



532 " 



74 



•0682 



2-83398 



1454 



•21 



•1442 



7 



•15887 



I96 



•48 



•Il6l 



15 



•06743 



551 ' 



75 



•0660 



23 



•8I944 



1526 



•22 



•1435 



7 



•1569I 



205 



•49 



•II46 



15 



•05922 



570 • 



76 



•0637 



23 



•8O4I8 



l602 



•23 



•1428 



7 



•15486 



2l6 



•50 



•I 131 



15 



•05352 



589 



77 



•06l4 



23 



■788l6 



1686 



•24 



•1421 



7 



'I527O 



227 



•51 



•IIl6 



15 



•O4763 



609 



78 



•0591 



24 



77130 



1777 



•25 



•1414 



8 



■15043 



237 



•52 



•iioi 



16 



•04154 



629 



79 



•0567 



24 



75353 



1877 



•26 



•1406 



: 8 



■14806 



247 



•53 



•1085 



16 



•03525 



651 



80 



•0543 



24 



73476 



*959 



■*7 



•1398 



8 



•14559 



259 



•54 



•1069 



17 



•02874 



674 



81 



•0519 



25 



7I5I7 



2137 



•28 



•I390 



9 



143OO 



269 



•55 



•1052 



t-7 



■02200 



696 



82 



•0494 



25 



•6938O 



2244 



29 



•I38l 



9 



•1403I 



28l 



•56 



•1035 



17 



•OI504 



721 



83 



•O469 



25 



•67I36 



2396 



•30 



•1372 



9 



•13750 



292 



•57 



•1018 



17 



•OO783 



746 



84 



•0444 



25 



•6474O 



2568 



31 



•1363 



9 



•.13458 



304 



•58 



•1001 



17 



•OOO37 



773 



85 



•0419 



26 



•62172 



2762 



•32 



•1354 



10 



•I3I54 



315 



•59 



•0984 



18 



2-99264 



800 



86 



•0393 



26 



•59410 



2986 



'33 



•1344 



10 



I2839 



i j2 8 



•60 



•0966 



19 



•98464 



829 



87 



•0367 



26 



•56424 



3244 



•34 



■1334 



10 



•I25II 



1340 



•61 



•0947 



19 



•97035 



859 



•88 



■0340 



27 



•53180 



3549 



•35 



•1324 



10 



•1217I 



353 



•62 



•OQ28 



*9 



•96776 



891 



89 



•0314 



27 



•4963I 



3910 



36 



•1313 



11 



•Il8l8 



366 



■63 



•0909 



r 9 



•95885 



924 



90 



•0287 



28 



•45721 



4347 



'37 



•1302 



11 



1 1452 



379 



•64 



•0890 



J 9 



:949°i 



960 



•91 



•0259 



28 



•41374 



4889 



•38 



•1291 



11 



•1 IO7O 



395 



•65 



•0871 



20 



•94001 



996 



•92 



•0232 



28 



•36485 



5573 



"39 



•1279 



12 



•I0680 



407 



•66 



■0851 



20 



•93005 



1036 



93 



•0204 



28 



•30912 



6471 



•40 



1267 



12 



•IO273 



420 



•67 



■0831 



20 



•91969 



1077 



94 



•OI76 



29 



2444I 



7695 



■43 



•1255 



13 



•09853 



1435 



•68 



•0811 



21 



•90892 



1121 



95 



•0147 



29 



•I6746 



9468 



42 



•1242 



13 



•09418 



45i 



■69 



•0790 



21 



i -89771 



1 168 



■96 



•0Il8 



29 



•07278 



12273 



43 



•1229 



13 



•08967 



466 



•70 



•0769 



21 



•88603 



1218 



•97 



•OO89 



29 



3 - 95005 



17389 



■44 



•I2l6 



13 



■0850I 



1482 



71 



■0748 



22 



•87385 



1270 



■98 



■0060 



30 



776l6 



29885 



•45 



•1203 



14 



•08019 



498 



•72 



•0726 



22 



•86115 



1328 



99 



•0030 



30 



•47731 





■46 



■II89 



M 



•0752I 



5i6 



73 



•0704 



22 



•84787 



1389 



•00 



o-ooo 









