survey means with weighting and stratification
119
10:36 Monday, December 20, 2004
The FREQ Procedure
equal
opps policy recoded to 0 1
Cumulative Cumulative
eo Frequency Percent
Frequency Percent
-------------------------------------------------------
0 412 18.86 412 18.86
1 1772 81.14 2184 100.00
Frequency Missing = 7
survey
means with weighting and stratification 120
10:36 Monday, December 20, 2004
The
SURVEYMEANS Procedure
Data Summary
Number of
Strata 66
Number of
Observations 2191
Sum of
Weights 2180.24002
Class Level Information
Class
Variable Label Levels Values
eo equal opps policy recoded to 0 1 2
0 1
Statistics
Variable Label
N
------------------------------------------------------------------------------
female Percentage of workforce female 2176
ethnic Percentage of workforce from minority
ethnic group 2070
disab Percentage of workforce disabled 2081
eo=0 equal opps policy recoded to 0 1 412
eo=1
1772
------------------------------------------------------------------------------
Statistics
Std Error Lower 95% Upper 95%
Variable Mean of Mean CL for Mean CL for Mean
------------------------------------------------------------------------
female 54.406490 1.093414 52.262207 56.550773
ethnic 4.210377 0.408599 3.409054 5.011700
disab 0.815400 0.100913 0.617495 1.013306
eo=0 0.324695 0.018071 0.289256 0.360135
eo=1 0.675305 0.018071 0.639865 0.710744
------------------------------------------------------------------------
survey means no weighting and stratification 121
10:36 Monday, December 20, 2004
The SURVEYMEANS Procedure
Data Summary
Number of
Strata 66
Number of
Observations 2191
Class Level Information
Class
Variable Label Levels Values
eo equal opps policy recoded to 0 1 2
0 1
Statistics
Variable Label
N
------------------------------------------------------------------------------
female Percentage of workforce female 2176
ethnic Percentage of workforce from minority
ethnic group 2070
disab Percentage of workforce disabled 2081
eo=0 equal opps policy recoded to 0 1 412
eo=1 1772
------------------------------------------------------------------------------
Statistics
Std Error Lower 95% Upper 95%
Variable Mean of Mean CL for Mean CL for Mean
------------------------------------------------------------------------
female 49.728716 0.442908 48.860135 50.597298
ethnic 4.888621 0.226524 4.444373 5.332869
disab 0.895441 0.057282 0.783104 1.007779
eo=0 0.188645 0.007745 0.173456 0.203833
eo=1 0.811355 0.007745 0.796167 0.826544
------------------------------------------------------------------------
survey means comparing groups 122
10:36
Monday, December 20, 2004
The
SURVEYMEANS Procedure
Data Summary
Number of
Strata 66
Number of
Observations 2191
Sum of
Weights 2180.24002
Statistics
Variable Label
N
------------------------------------------------------------------------------
female Percentage of workforce female 2176
disab Percentage of workforce disabled 2081
ethnic Percentage of workforce from minority
ethnic group 2070
------------------------------------------------------------------------------
Statistics
Std Error Lower 95% Upper 95%
Variable Mean of Mean CL for Mean CL for Mean
------------------------------------------------------------------------
female 54.406490 1.093414 52.262207 56.550773
disab 0.815400 0.100913 0.617495 1.013306
ethnic 4.210377 0.408599 3.409054 5.011700
------------------------------------------------------------------------
Domain Analysis: eo
equal opps policyrecoded to 0 1
Variable Label
N
------------------------------------------------------------------------------------
0 female
Percentage of workforce female 407
disab Percentage of workforce disabled 394
ethnic
Percentage of workforce from minority ethnic group 391
1 female
Percentage of workforce female 1762
disab Percentage of workforce disabled 1680
ethnic
Percentage of workforce from minority ethnic group 1672
------------------------------------------------------------------------------------
Domain Analysis: eo
equal
opps
policy
recoded Std Error Lower 95% Upper 95%
to 0 1 Variable Mean of Mean CL for Mean CL for Mean
--------------------------------------------------------------------------------
0 female
42.409654 2.474232 37.557272 47.262036
disab 0.753479 0.182933 0.394707 1.112251
ethnic 2.373978 0.475469 1.441476 3.306480
1
female 60.041079 1.212404 57.663442 62.418716
disab 0.856143 0.123015 0.614893 1.097392
ethnic 5.115948 0.554713 4.028070 6.203825
--------------------------------------------------------------------------------
using SURVEYREG
to compare groups weighted and unweighted 123
10:36 Monday, December 20, 2004
The SURVEYREG
Procedure
Regression
Analysis for Dependent Variable female
Data Summary
Number of
Observations 2169
Sum of Weights 2153.8
Weighted
Mean of female 54.30896
Weighted
Sum of female 116972.9
Design Summary
Number
of Strata 66
Fit Statistics
R-square 0.07044
Root
MSE 30.0162
Denominator DF 2103
ANOVA for
Dependent Variable female
Sum of Mean
Source DF Squares Square
F Value Pr > F
Model 1 146910
146909.8 164.20 <.0001
Error 2167 1938757 894.7
Corrected Total 2168
2085667
Tests of Model Effects
Effect Num DF
F Value Pr > F
Model 1 37.85
<.0001
Intercept 1 293.67
<.0001
eo 1 37.85
<.0001
NOTE: The denominator
degrees of freedom for the F tests is 2103.
Estimated Regression Coefficients
Standard
Parameter Estimate Error t Value
Pr > |t|
Intercept 42.4096537 2.47477635 17.14
<.0001
eo 17.6314252 2.86601615 6.15
<.0001
NOTE: The denominator
degrees of freedom for the t tests is 2103.
using SURVEYREG to compare groups
weighted and unweighted 124
10:36 Monday, December 20, 2004
The
SURVEYREG Procedure
Regression
Analysis for Dependent Variable female
Data Summary
Number of
Observations 2169
Mean of
female 49.69189
Sum of
female 107781.7
Design
Summary
Number
of Strata 66
Fit Statistics
R-square 0.02323
Root
MSE 28.1686
Denominator DF 2103
ANOVA for
Dependent Variable female
Sum of Mean
Source DF Squares Square
F Value Pr > F
Model 1 40889
40888.57 51.53 <.0001
Error 2167 1719448 793.47
Corrected Total 2168
1760336
Tests of Model
Effects
Effect Num DF
F Value Pr > F
Model 1 57.84
<.0001
Intercept 1 1011.01
<.0001
eo 1 57.84
<.0001
NOTE: The denominator
degrees of freedom for the F tests is 2103.
Estimated Regression Coefficients
Standard
Parameter Estimate Error t Value
Pr > |t|
Intercept 40.6579587 1.27869831 31.80
<.0001
eo 11.1206610 1.46222014 7.61
<.0001
NOTE: The denominator degrees
of freedom for the t tests is 2103.
using SURVEYREG to compare groups weighted
and unweighted 125
10:36 Monday, December 20, 2004
The
SURVEYREG Procedure
Regression
Analysis for Dependent Variable disab
Data Summary
Number of
Observations 2074
Sum of
Weights 2131.6
Weighted
Mean of disab 0.82283
Weighted
Sum of disab 1753.9
Design Summary
Number of
Strata 629
Number of Strata
Collapsed 483
Fit Statistics
R-square 0.000354
Root
MSE 2.5556
Denominator DF 1927
ANOVA
for Dependent Variable disab
Sum of Mean
Source DF Squares Square
F Value Pr > F
Model 1 4.92
4.924754 0.73 0.3918
Error 2072 13907.78
6.712250
Corrected Total 2073
13912.71
Tests of Model Effects
Effect Num DF
F Value Pr > F
Model 1 0.20
0.6553
Intercept 1 17.97
<.0001
eo 1 0.20
0.6553
NOTE: The denominator degrees of freedom
for the F tests is 1927.
Estimated Regression Coefficients
Standard
Parameter Estimate Error t Value
Pr > |t|
Intercept 0.75347893 0.17772051 4.24
<.0001
eo 0.10266386 0.22994140 0.45
0.6553
NOTE: The denominator degrees
of freedom for the t tests is 1927.
using SURVEYREG to
compare groups weighted and unweighted 126
10:36 Monday, December 20, 2004
The
SURVEYREG Procedure
Regression
Analysis for Dependent Variable female
Data Summary
Number of
Observations 2169
Mean of
female 49.69189
Sum of
female 107781.7
Design Summary
Number
of Strata 66
Fit Statistics
R-square 0.02323
Root
MSE 28.1686
Denominator DF 2103
ANOVA for
Dependent Variable female
Sum of Mean
Source DF Squares Square
F Value Pr > F
Model 1 40889
40888.57 51.53 <.0001
Error 2167 1719448 793.47
Corrected Total 2168
1760336
Tests of Model Effects
Effect Num DF
F Value Pr > F
Model 1 57.84
<.0001
Intercept 1
1011.01 <.0001
eo 1 57.84
<.0001
NOTE: The denominator
degrees of freedom for the F tests is 2103.
Estimated Regression Coefficients
Standard
Parameter Estimate Error t Value
Pr > |t|
Intercept 40.6579587 1.27869831 31.80
<.0001
eo 11.1206610 1.46222014 7.61
<.0001
NOTE: The denominator
degrees of freedom for the t tests is 2103.
using SURVEYREG to
compare groups weighted and unweighted 127
10:36 Monday, December 20, 2004
The
SURVEYREG Procedure
Regression
Analysis for Dependent Variable ethnic
Data Summary
Number of
Observations 2063
Sum of
Weights 2126.3
Weighted
Mean of ethnic 4.22431
Weighted
Sum of ethnic 8982.1
Design Summary
Number of Strata 66
Fit Statistics
R-square 0.01663
Root
MSE 9.8824
Denominator DF 1997
ANOVA for
Dependent Variable ethnic
Sum of Mean
Source DF Squares Square
F Value Pr > F
Model 1 3508.0
3508.021 34.85 <.0001
Error 2061 207456.4
100.658
Corrected Total 2062
210964.5
Tests of Model Effects
Effect Num DF
F Value Pr > F
Model 1 14.14
0.0002
Intercept 1 24.92
<.0001
eo 1 14.14
0.0002
NOTE: The denominator degrees of freedom
for the F tests is 1997.
Estimated Regression Coefficients
Standard
Parameter Estimate Error t Value
Pr > |t|
Intercept 2.37397791 0.47557405 4.99
<.0001
eo 2.74196987 0.72928686 3.76
0.0002
NOTE: The denominator degrees
of freedom for the t tests is 1997.
using SURVEYREG
to compare groups weighted and unweighted 128
10:36 Monday, December 20, 2004
The
SURVEYREG Procedure
Regression
Analysis for Dependent Variable ethnic
Data Summary
Number of
Observations 2063
Mean of
ethnic 4.89609
Sum of
ethnic 10100.6
Design Summary
Number
of Strata 66
Fit Statistics
R-square 0.006214
Root
MSE 10.4373
Denominator DF 1997
ANOVA for
Dependent Variable ethnic
Sum of Mean
Source DF Squares Square
F Value Pr > F
Model 1 1403.8
1403.824 12.89 0.0003
Error 2061 224518.9
108.937
Corrected Total 2062
225922.7
Tests of Model Effects
Effect Num DF
F Value Pr > F
Model 1 17.51
<.0001
Intercept 1 55.62
<.0001
eo 1 17.51
<.0001
NOTE: The denominator
degrees of freedom for the F tests is 1997.
Estimated Regression Coefficients
Standard
Parameter Estimate Error t Value
Pr > |t|
Intercept 3.19025657 0.42776027 7.46
<.0001
eo 2.10474485 0.50291738 4.19
<.0001
NOTE: The denominator
degrees of freedom for the t tests is 1997.
investigating finite population corrections 129
10:36
Monday, December 20, 2004
The
SURVEYMEANS Procedure
Data Summary
Number of
Strata 66
Number of Observations 2191
Sum of
Weights 2180.24002
Statistics
Std Error
Variable Label N Mean of Mean
------------------------------------------------------------------------------------
eo equal opps policy recoded to 0 1 2184 0.675305 0.018035
------------------------------------------------------------------------------------
Statistics
Lower 95% Upper 95%
Variable CL for Mean CL for Mean
--------------------------------------
eo 0.639936 0.710673
--------------------------------------
investigating finite population corrections 130
10:36 Monday, December 20, 2004
The
SURVEYMEANS Procedure
Data Summary
Number of
Strata 66
Number of
Observations 2191
Sum of
Weights 2180.24002
Statistics
Std Error
Variable Label N Mean of Mean
------------------------------------------------------------------------------------
eo equal opps policy recoded to 0 1 2184
0.675305 0.018035
------------------------------------------------------------------------------------
Statistics
Lower 95% Upper 95%
Variable CL for Mean CL for Mean
--------------------------------------
eo 0.639936 0.710673
--------------------------------------
Domain Analysis:
nempsize
nemp
size Variable
Label N Mean
------------------------------------------------------------------------------------
1 eo equal opps policy recoded to 0 1 259 0.637269
2 eo
equal opps policy recoded to 0 1 396
0.656998
3 eo
equal opps policy recoded to 0 1 390
0.706622
4 eo equal opps policy recoded to 0 1 387 0.815329
5 eo
equal opps policy recoded to 0 1 456
0.870585
6 eo
equal opps policy recoded to 0 1 183
0.887352
7 eo
equal opps policy recoded to 0 1 72 0.980405
8 eo
equal opps policy recoded to 0 1 41
0.977281
------------------------------------------------------------------------------------
Domain Analysis: nempsize
nemp Std Error Lower 95% Upper 95%
size Variable of Mean CL for Mean CL for Mean
------------------------------------------------------------------
1 eo 0.032790 0.572948 0.701590
2 eo 0.033618 0.591053 0.722944
3 eo 0.027415 0.652854 0.760390
4 eo 0.023440 0.769354 0.861305
5 eo 0.019386 0.832561 0.908610
6 eo 0.024368 0.839539 0.935165
7 eo 0.012946 0.954980 1.005830
8 eo 0.020937 0.936144 1.018419
------------------------------------------------------------------
without finite population corrections 131
7 10:36 Monday, December 20, 2004
The
SURVEYMEANS Procedure
Data Summary
Number of
Strata 66
Number of
Observations 2191
Sum of
Weights 2180.24002
Statistics
Std Error
Variable Label N Mean of Mean
------------------------------------------------------------------------------------
eo equal opps policy recoded to 0 1 2184 0.675305 0.018071
------------------------------------------------------------------------------------
Statistics
Lower 95% Upper 95%
Variable CL for Mean CL for Mean
--------------------------------------
eo 0.639865 0.710744
--------------------------------------
Domain Analysis:
nempsize
nemp
size Variable
Label N Mean
------------------------------------------------------------------------------------
1 eo equal opps policy recoded to 0 1 259 0.637269
2 eo
equal opps policy recoded to 0 1 396
0.656998
3 eo
equal opps policy recoded to 0 1 390
0.706622
4 eo equal opps policy recoded to 0 1 387 0.815329
5 eo
equal opps policy recoded to 0 1 456
0.870585
6 eo
equal opps policy recoded to 0 1 183
0.887352
7 eo
equal opps policy recoded to 0 1 72 0.980405
8 eo
equal opps policy recoded to 0 1 41
0.977281
------------------------------------------------------------------------------------
Domain Analysis: nempsize
nemp Std Error Lower 95% Upper 95%
size Variable of Mean CL for Mean CL for Mean
------------------------------------------------------------------
1 eo 0.032850 0.572832 0.701706
2 eo 0.033680 0.590931 0.723065
3 eo 0.027553 0.652584 0.760659
4 eo 0.023688 0.768867 0.861791
5 eo 0.019746 0.831855 0.909315
6 eo 0.025527 0.837263 0.937441
7 eo 0.014217 0.952484 1.008327
8 eo 0.022600 0.932877 1.021686
------------------------------------------------------------------