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Page Title:
Table B2. Sand and Underflow T-Test Results |
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 Table B2
Sand and Underflow T-Test Results
Variable
Method
Variances
DF
t Value
Pr > |t|
AS
Pooled
Equal
10
-0.70
0.5012
AS
Satterthwaite
Unequal
1.44
-0.70
0.5803
CD
Pooled
Equal
10
-0.30
0.7669
CD
Satterthwaite
Unequal
9.95
-0.66
0.5215
CR
Pooled
Equal
10
0.35
0.7312
CR
Satterthwaite
Unequal
1.32
0.32
0.7928
CU
Pooled
Equal
10
2.52
0.0306
CU
Satterthwaite
Unequal
1.02
1.03
0.4886
PB
Pooled
Equal
10
2.38
0.0384
PB
Satterthwaite
Unequal
1.03
1.06
0.4782
HG
Pooled
Equal
10
2.89
0.0162
HG
Satterthwaite
Unequal
1
1.00
0.5000
NI
Pooled
Equal
10
-0.94
0.3704
NI
Satterthwaite
Unequal
1.7
-1.10
0.4026
SE
Pooled
Equal
10
.
.
SE
Satterthwaite
Unequal
10
.
.
AG
Pooled
Equal
10
8.10
<.0001
AG
Satterthwaite
Unequal
1.01
3.19
0.1908
ZN
Pooled
Equal
10
10.38
<.0001
ZN
Satterthwaite
Unequal
1.03
4.71
0.1273
BA
Pooled
Equal
10
-0.34
0.7383
BA
Satterthwaite
Unequal
2.55
-0.51
0.6536
pcb_1242
Pooled
Equal
10
9.13
<.0001
pcb_1242
Satterthwaite
Unequal
1.02
3.78
0.1609
pcb_1260
Pooled
Equal
10
2.13
0.0593
pcb_1260
Satterthwaite
Unequal
1.1
1.27
0.4103
toc
Pooled
Equal
10
0.84
0.4211
toc
Satterthwaite
Unequal
4.9
1.51
0.1915
OG
Pooled
Equal
10
4.39
0.0013
OG
Satterthwaite
Unequal
1.03
1.94
0.2970
TRPH
Pooled
Equal
10
-3.39
0.0069
TRPH
Satterthwaite
Unequal
1
-1.22
0.4375
Table B3
Sand and Underflow Equality of Variances Test Results
Variable
Method
Num DF
Den DF
F Value
Pr > F
AS
Folded
F
9
1
1.00
1.0000
CD
Folded
F
9
1
36.23
0.2566
CR
Folded
F
1
9
1.32
0.5606
CU
Folded
F
1
9
22.22
0.0022
PB
Folded
F
1
9
13.53
0.0102
HG
Folded
F
1
9
Infty
<.0001
NI
Folded
F
9
1
1.56
1.0000
SE
Folded
F
1
9
.
.
AG
Folded
F
1
9
30.00
0.0008
ZN
Folded
F
1
9
12.10
0.0139
BA
Folded
F
9
1
3.16
0.8250
pcb_1242
Folded
F
1
9
20.35
0.0029
pcb_1260
Folded
F
1
9
4.26
0.1380
toc
Folded
F
9
1
7.32
0.5595
OG
Folded
F
1
9
13.75
0.0097
TRPH
Folded
F
1
9
117.96
<.0001
B5
Appendix B Statistical Analysis of Results
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