Civil Engineering Reference
In-Depth Information
Tabl e 2 Summary of
simultaneous multiple
regression analyses for eight
factors of KOC predicting KS
( N
R 2
Va r i a b l e
B
S E
β
t
change
Constant
1.695
0.127
13.385***
TA
0.221
0.035
0.241
6.320***
0.304
ES
0.176
0.034
0.190
5.135***
0.042
=
967)
OA
0.104
0.028
0.129
3.740***
0.017
AL
0.099
0.034
0.105
2.904**
0.005
EI
0.066
0.033
0.078
2.022*
0.003
PA
0.052
0.024
0.067
2.003*
0.002
HR
0.047
0.028
0.053
1.966*
0.002
TW
0.043
0.029
0.051
1.875*
0.002
* p
<
0
.
05, ** p
<
0
.
01, *** p
<
0
.
001
Tabl e 3 Summary of simple
regression analyses for KOC
predicting IM ( N
R 2
Va r i a b l e
B
S E
β
t
Constant
0.972
0.100
9.749***
=
967)
KOC
0.757
0.022
0.744
34.635***
0.554
*** p < 0 . 001
Tabl e 4 Summary of
simultaneous multiple
regression analyses for eight
factors of KOC predicting IM
( N
R 2
Va r i a b l e
B
S E
β
t
change
Constant
0.982
0.105
9.324***
EI
0.138
0.032
0.171
4.902***
0.414
TA
0.112
0.029
0.147
4.439***
0.078
=
967)
HR
0.104
0.028
0.126
3.828***
0.031
AL
0.102
0.028
0.113
3.609***
0.014
PA
0.098
0.027
0.112
3.100**
0.010
ES
0.082
0.025
0.093
2.862**
0.006
TW
0.068
0.025
0.088
2.439*
0.003
OA
0.052
0.024
0.067
2.215*
0.002
* p
<
0
.
05, ** p
<
0
.
01, *** p
<
0
.
001
Tabl e 5 Summary of simple
regression snalyses for KS
predicting IM ( N =
R 2
Va r i a b l e
B
S E
β
t
Constant
1.498
0.113
13.210***
967)
KS
0.613
0.024
0.639
25.773***
0.407
*** p
<
0
.
001
(see Table 3 ). Furthermore simultaneous multiple regression analysis is used for
eight factors of KOC predicting IM. The result shows that all the eight factors of
KOC are proved to have significant influences, which in turn are EI, TA, HR, AL,
PA,ES,TW,andOA(seeTable 4 ). Apparently, EI of KOC is proved to affect IM
the most.
3. KS significantly affects IM, and SB of KS is more influential than SW.
Taking KS as an independent variable and IM as a dependent variable by
means of simple regression analysis, it is found that KS significantly affects IM
(see Table 5 ). Furthermore simultaneous multiple regression analysis is used for two
 
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