ERROR TO CASES OF NORMAL DISTRIBUTION AND CORRELATION. 167 
Table VI.—Abscissa of Standard Normal Curve in terms of Class-Index. 
Class-Index = a. 
Abscissa = x. 
a = 
e . 
a. 
X. 
1 
: Oi, 
1 
X. 
1 
a. 
X. 
•00 
•00000 
•34 
•43991 
■67 
•97411 
•01 
•01-253 
•35 
■45376 
■68 
•99446 
•02 
•02507 
•36 
•46770 
■69 
1-01522 
•03 
•03761 
•37 
•48173 
•70 
!■ 03643 
•04 
•05015 
■38 
•49585 
■71 
1-05812 
•05 
•06271 
•39 
•51007 
•72 
1-08032 
•06 
•07527 
•40 
•5-2440 
•73 
1-10306 
■07 
•08784 
•41 
•53884 
■74 
1 12639 
•08 
•10043 
•42 
•55338 
•75 
1-15035 
•09 
•11304 
•43 
■56805 
•76 
1-17499 
■10 
•12566 
•44 
•58284 
•77 
1-20036 
•II 
•13830 
•45 
■59776 
•78 
1-22653 
•12 
•15097 
•46 
•61281 
•79 
1-25357 
•13 
•16366 
■47 
•6280] 
•80 
1-28155 
■14 
•17637 
•48 
•64335 
•81 
1-31058 
•15 
•18912 
•49 
•65884 
•82 
1-34076 
•16 
•20189 
•50 
•67449 
•83 
1-37220 
•17 
•21470 
•51 
•69031 
•84 
1-40507 
•18 
•22754 
•52 
•70630 
•85 
1-43953 
•19 
■24043 
•53 
•72-248 
‘86 
1-47579 
•20 
•25335 ! 
•54 
■73885 
•87 
1-51410 
•21 
•26631 
•55 
■75542 
•88 
1-55477 
■22 
•27932 
■56 
■77219 
•89 
1-59819 
■23 
•29237 
•57 
•78919 
■90 
1-64485 
•24 
•30548 
•58 
•80642 
•91 
1-69540 
•25 
•31864 
•59 
•8-2389 
•92 
1-75069 
•26 
•33185 
•60 
•84162 
•93 
1-81191 
•27 
•34513 
•61 
•85962 
•94 
1-88079 
•28 
•35846 
•62 
•87790 
•95 
1-95996 
•29 
•37186 
•63 
•89647 
•96 
2-05375 
•30 
•38532 
•64 
•91537 
•97 
2-17009 
•31 
•39886 
•65 
•93459 
•98 
2-32635 
•32 
•41246 
•66 
•95417 
•99 
2-57583 
•33 
•42615 
