Document MrnLor7e3x57Y4egN4ZOvzkz
'ank Vagon Ethyl and Pilling; Station Ethyl-Compaison l$2f - 1929
V
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hirV 0, v
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H 0018102
N19533
.24 - .279 .28 - .519 .32 - .359 .36 - .399 .40 - .439 .44 - .479 .48 - .519 .52 -
4
16
6 36
17
7 49
08 0 0
09 0 0
0 10 0 0
0 11
o 0
0 12 0 0
4 13
52 676
49 183 1157
183 = 3.734694 49
H N Hff
II II
Nu 2 = P f = 25..612244 49
13.947939
Pi2 = 9.664305
Sigma = 3.108747 x .04 = .124350 mgs. _ .67449 X .124550 _ .085875
P.E.sig. J 9 8 9.899494
= + .008472
mean = 3.734694 x .04 + .02
.24 - .279 .28 - .319
Nuj. =
Hu2 =
(Nux ) 2 = Pi2 =
Sigma =
P.E. sig.
~
=
mean =
= .169388 mgs. Pb P.E.jjj = -Q-y -- ^ = + .011982
= P 'E *m =
mean = .169 + .012 mgs. Pb S.D. = .124 + .008 mgs. Pb
mean = S.D. = Test of Difference
mean 1927 = .169 mean 1929 = .099
Diff. = .070
p *E *dif. - J( .0 12 )2 + (.0 0 6 f = J.000144 + .000036 = 'j.000180 = + .013
Diff P.E.di
The differenc is beginning 5 . 3 x p .E.dif<
.24 - .279 .28 - .319 .32 - .359 .56 -- .399 .40 - .439 .44 - .479 ,48 -
16
17 08 09 1 10 0 11 1 12
36
6 36
7 49 00 00 10 10 0 00 12 144
98 496
.24 - .279 .2 8 - .519 .32 - .359 .36 - .399 .40 - .439 .44 - .479 .48 - .519 .52 -
Na, =
2.722222
56
Nu 2 =
= 15.777777
2 56
( li n x) S = 7.410493
Pi2 ~ 6.367284
Nux
Nu 2
(Nux) 2 Pi2
Sigma = 2.523348 x .04 = .100934 mgs.
P E = 67449 x .100954 = .063079
* 'sig.
8.485231
8.485281
= + .008023
>
Sigma
' " sig*
mean = 2.722222 x .04 + .02
mean
= .128888 mgs./gm. ash
P.E. = Q6.8079 = + .011547 6~
P.E. m
mean = .129 .011 mgs./gm. ash
mean
S.D. = .101 + .008 mgs.
S.D.
Test of Difference
mean 1927 = .129
mean 1929 = .123
.Diff. = .006
P --- -------- --
P.E. . = %l(.01l) + (.010) dif j--.
= vj.000121 + .000100
Dif P.E.g
The differen certainly no
= J.000521
= .018
HE 0019104
.40 - .479 4 5 20 10 0
.48 - .559 0 6 0 0
.56 - .639 4 7 28 196
.64 - .719 1 8
8 64
.72 - .799 0 9 0 0
.80 - .879
0 10
0
0
.83 - .959
0 11
0
0
.96 -1.039
0 12
0
0
1.04 -
1 13
IS. 169
36 124 680
.40 - .479 .48 - .559 .56 - .639 .64 - .719 .72 - .799 .80 - .879 .8 8 - .959 .96 -1.059 1.04 -
Nux - 124 " 5.444444 36
= " = 18.888889 36
, ,2 (Hnx) = 11.864194
Hu, 1
Nu2 = 2
(Nux ) 2 =
Pig = 7.024695
Pig =
Sigma = 2.650414 x ,08 = .212033 mgs.
p _ _ .67449 x .212055 .145014
' *sig.
8.485281
8.485281
Sigma =
,_ `*sig.
= .016854
=
mean = 3.444444 x .08 + .04
mean =
-- .515556 mgs
P.E. m
.145014 .023836 6
P.E a
mean = .316 .024 mgs. Pb
mean =
S.D. = .212 + .017 mgs.
S.D. =
Test of Difference
mean 1927 = .316 mean 1929 = . 5 1 5
Diff. = .001 P.E.'dlf. 4C.024)2 + (.023)'
= J .000576 + .000529
= 4 .001105
= + .033
Diff P.E.di
There is a sl 1929 but it i
0019105
.24 - .279 0 6 0 0
.28 - .319 0 7 0 0
.32 - .359
18
8 64
.56 - .599
19
9 81
.40 - .439 .44. _ .4 79
.48 - .519
1 10
2 11 0 12
10 100
22 242 00
.52 -
. 1 13
13 169
49 139 855
.24 - .279 .28 - .519 .32 - .359 .56 - .599 .40 - .439 .44 - .479 .48 - .519 .52 -
N II
F*
ll 0
II H
&
= 2.836735 49 855 _ 17 448979 49 * (Nux) 2 = 8.047065
Hu 2 = (Nux) 2 =
Pi2 = 9.401914
Sigma = 3.066254
.122650 mgs.
.67449 x .122650 .082726
P.Esig.=
4-98
9 .899494
= .008357
Pi2 = Sigma = P.E.gig. =
=
mean = 2.836735 x .04 + .0 2
= .133469 mgs./liter
P *Em =
.082726 _ -xL. 7
mvuTeoi 0
mean = -
P.E.m =
mean = .133 .0 12 mgs./lit1sr
mean =
S.D* -- .123 .008
S.D. =
Test of Difference
mean 1927 = .135
Djff,
mean 1929 = .092,
' P.E.
Diff. '= .041 j------"------ The difference (in favor
p *E *dif. = n (.912) + (.0 10 )
certainly not
= 4 .000144 + .000100
= 000244 "
= + .016