TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

The UNIVARIATE Procedure
Variable: resid (Studentized Residual without Current Obs)

Moments
N 29 Sum Weights 29
Mean -0.052442 Sum Observations -1.5208173
Std Deviation 1.09662206 Variance 1.20257995
Skewness -0.6217007 Kurtosis 1.90182082
Uncorrected SS 33.7519932 Corrected SS 33.6722386
Coeff Variation -2091.1151 Std Error Mean 0.2036376

Basic Statistical Measures
Location Variability
Mean -0.05244 Std Deviation 1.09662
Median 0.06724 Variance 1.20258
Mode . Range 5.65764
    Interquartile Range 0.94759

Tests for Location: Mu0=0
Test Statistic p Value
Student's t t -0.25753 Pr > |t| 0.7987
Sign M 1.5 Pr >= |M| 0.7111
Signed Rank S 1.5 Pr >= |S| 0.9748

Quantiles (Definition 5)
Quantile Estimate
100% Max 2.5629002
99% 2.5629002
95% 1.2264208
90% 0.9725155
75% Q3 0.6023091
50% Median 0.0672387
25% Q1 -0.3452806
10% -1.6957763
5% -2.2577092
1% -3.0947379
0% Min -3.0947379

Extreme Observations
Lowest Highest
Value Obs Value Obs
-3.094738 6 0.843625 30
-2.257709 7 0.867817 31
-1.695776 8 0.972515 32
-1.010305 9 1.226421 33
-0.868656 10 2.562900 34

Missing Values
Missing
Value		 Count Percent Of
All Obs Missing Obs
. 5 14.71 100.00 

    Stem Leaf                     #             Boxplot                                   Normal Probability Plot               
       2 6                        1                0                   2.75+                                             *   ++ 
       2                                                                   |                                            +++++   
       1                                                                   |                                        ++++        
       1 02                       2                |                       |                                   +++++ *          
       0 55667789                 8             +-----+                    |                            ****+*** **             
       0 01122                    5             *-----*                    |                        *****++                     
      -0 332222                   6             +--+--+               -0.25+                   *****++                          
      -0 988                      3                |                       |               ***+++                               
      -1 0                        1                |                       |            +*+++                                   
      -1 7                        1                |                       |        ++++*                                       
      -2 3                        1                0                       |   +++++ *                                          
      -2                                                                   |+++                                                 
      -3 1                        1                0                  -3.25+     *                                              
         ----+----+----+----+                                               +----+----+----+----+----+----+----+----+----+----+ 
                                                                                -2        -1         0        +1        +2


TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

Obs resid iat_mean iat_n BGsciDIFF99 countrycitzn
1 . 0.39784 55 . SI
2 . 0.39817 1502 . NO
3 . 0.44593 5649 . SE
4 . 0.40781 8194 . AU
5 . 0.39527 15471 . UK
6 -3.09474 0.25671 37 -18 JO
7 -2.25771 0.30604 541 -12 PH
8 -1.69578 0.51348 489 7 RO
9 -1.01031 0.42329 1349 7 NZ
10 -0.86866 0.41825 104 10 CY
11 -0.81665 0.64834 17 25 TN
12 -0.78611 0.29086 47 0 MK
13 -0.34528 0.50838 3110 18 NL
14 -0.33774 0.46123 58 15 LV
15 -0.24829 0.44558 457 15 HK
16 -0.22479 0.36694 322 10 MY
17 -0.21675 0.44371 924 15 IL
18 -0.18444 0.42598 210 14 BG
19 0.03567 0.44178 425 17 TW
20 0.06724 0.45299 1286 18 BE
21 0.08084 0.49977 69 21 SK
22 0.15853 0.48889 106 21 LT
23 0.16954 0.36790 2476 13 JP
24 0.51382 0.28221 15 11 MD
25 0.51979 0.43354 317 21 RU
26 0.57937 0.39061 849 19 ZA
27 0.60231 0.50682 2559 25 HU
28 0.67978 0.39549 1164 19 IT
29 0.68626 0.35176 152 17 ID
30 0.84363 0.42425 1449 21 KR
31 0.86782 0.37852 822 21 SG
32 0.97252 0.37570 248306 19 US
33 1.22642 0.38852 163 23 CL
34 2.56290 0.36389 152 31 IR


TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

The UNIVARIATE Procedure
Variable: lever (Leverage)

Moments
N 34 Sum Weights 34
Mean 0.05882353 Sum Observations 2
Std Deviation 0.0656387 Variance 0.00430844
Skewness 3.66532112 Kurtosis 17.2479947
Uncorrected SS 0.25982553 Corrected SS 0.14217847
Coeff Variation 111.585785 Std Error Mean 0.01125694

Basic Statistical Measures
Location Variability
Mean 0.058824 Std Deviation 0.06564
Median 0.042638 Variance 0.00431
Mode 0.000000 Range 0.37782
    Interquartile Range 0.03621

Tests for Location: Mu0=0
Test Statistic p Value
Student's t t 5.225533 Pr > |t| <.0001
Sign M 14.5 Pr >= |M| <.0001
Signed Rank S 217.5 Pr >= |S| <.0001

Quantiles (Definition 5)
Quantile Estimate
100% Max 0.3778227
99% 0.3778227
95% 0.1445797
90% 0.0979027
75% Q3 0.0669228
50% Median 0.0426379
25% Q1 0.0307159
10% 0.0000000
5% 0.0000000
1% 0.0000000
0% Min 0.0000000

Extreme Observations
Lowest Highest
Value Obs Value Obs
0 5 0.0956751 30
0 4 0.0979027 31
0 3 0.1136372 32
0 2 0.1445797 33
0 1 0.3778227 34


TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

The UNIVARIATE Procedure
Variable: lever (Leverage)

    Stem Leaf                     #             Boxplot                                   Normal Probability Plot               
       3 8                        1                *                  0.375+                                              *     
       3                                                                   |                                                    
       2                                                                   |                                                    
       2                                                                   |                                               ++++ 
       1                                                                   |                                       ++++++++     
       1 0014                     4                0                       |                                +++++++*  *         
       0 55566677789             11             +--+--+                    |                        +++***********              
       0 000003333334444444      18             *-----*               0.025+    *   *  * **************                         
         ----+----+----+----+                                               +----+----+----+----+----+----+----+----+----+----+ 
     Multiply Stem.Leaf by 10**-1                                               -2        -1         0        +1        +2


TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

Obs lever iat_mean iat_n BGsciDIFF99 countrycitzn
1 0.00000 0.39784 55 . SI
2 0.00000 0.39817 1502 . NO
3 0.00000 0.44593 5649 . SE
4 0.00000 0.40781 8194 . AU
5 0.00000 0.39527 15471 . UK
6 0.02670 0.42598 210 14 BG
7 0.02714 0.43354 317 21 RU
8 0.02828 0.39061 849 19 ZA
9 0.03072 0.42329 1349 7 NZ
10 0.03113 0.37852 822 21 SG
11 0.03416 0.44371 924 15 IL
12 0.03698 0.45299 1286 18 BE
13 0.03727 0.46123 58 15 LV
14 0.03851 0.44178 425 17 TW
15 0.03981 0.44558 457 15 HK
16 0.04006 0.38852 163 23 CL
17 0.04125 0.39549 1164 19 IT
18 0.04403 0.36694 322 10 MY
19 0.04839 0.36389 152 31 IR
20 0.05064 0.35176 152 17 ID
21 0.05297 0.42425 1449 21 KR
22 0.05947 0.48889 106 21 LT
23 0.05959 0.41825 104 10 CY
24 0.06342 0.37570 248306 19 US
25 0.06692 0.51348 489 7 RO
26 0.06692 0.50838 3110 18 NL
27 0.07269 0.30604 541 -12 PH
28 0.08245 0.49977 69 21 SK
29 0.09090 0.36790 2476 13 JP
30 0.09568 0.29086 47 0 MK
31 0.09790 0.50682 2559 25 HU
32 0.11364 0.28221 15 11 MD
33 0.14458 0.25671 37 -18 JO
34 0.37782 0.64834 17 25 TN


TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

The UNIVARIATE Procedure
Variable: cookd (Cook's D Influence Statistic)

Moments
N 29 Sum Weights 29
Mean 0.05099842 Sum Observations 1.47895416
Std Deviation 0.12070759 Variance 0.01457032
Skewness 3.99157713 Kurtosis 17.8278156
Uncorrected SS 0.48339335 Corrected SS 0.40796903
Coeff Variation 236.688887 Std Error Mean 0.02241484

Basic Statistical Measures
Location Variability
Mean 0.050998 Std Deviation 0.12071
Median 0.012211 Variance 0.01457
Mode . Range 0.61421
    Interquartile Range 0.02949

Tests for Location: Mu0=0
Test Statistic p Value
Student's t t 2.275208 Pr > |t| 0.0307
Sign M 14.5 Pr >= |M| <.0001
Signed Rank S 217.5 Pr >= |S| <.0001

Quantiles (Definition 5)
Quantile Estimate
100% Max 6.14236E-01
99% 6.14236E-01
95% 2.05027E-01
90% 1.73457E-01
75% Q3 3.08122E-02
50% Median 1.22109E-02
25% Q1 1.32383E-03
10% 3.04870E-04
5% 9.01188E-05
1% 2.64633E-05
0% Min 2.64633E-05

Extreme Observations
Lowest Highest
Value Obs Value Obs
2.64633E-05 6 0.0964177 30
9.01188E-05 7 0.1384368 31
3.04870E-04 8 0.1734570 32
4.83823E-04 9 0.2050266 33
8.24242E-04 10 0.6142355 34

Missing Values
Missing
Value		 Count Percent Of
All Obs Missing Obs
. 5 14.71 100.00 

   Stem Leaf                         #            Boxplot                                  Normal Probability Plot              
      6 1                            1               *                 0.625+                                             *     
      5                                                                     |                                                   
      5                                                                     |                                                   
      4                                                                     |                                                   
      4                                                                     |                                                   
      3                                                                     |                                                  +
      3                                                                0.325+                                              ++++ 
      2                                                                     |                                          ++++     
      2 1                            1               *                      |                                      +++*         
      1 7                            1               *                      |                                  ++++*            
      1 04                           2               0                      |                              ++++   *             
      0                                                                     |                         +++++     *               
      0 000000000000111122222333    24            +--+--+              0.025+     *   *  ** *** ************* **                
        ----+----+----+----+----                                             +----+----+----+----+----+----+----+----+----+----+
    Multiply Stem.Leaf by 10**-1                                                 -2        -1         0        +1        +2


TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

Obs cookd iat_mean iat_n BGsciDIFF99 countrycitzn
1 . 0.39784 55 . SI
2 . 0.39817 1502 . NO
3 . 0.44593 5649 . SE
4 . 0.40781 8194 . AU
5 . 0.39527 15471 . UK
6 0.00003 0.44178 425 17 TW
7 0.00009 0.45299 1286 18 BE
8 0.00030 0.49977 69 21 SK
9 0.00048 0.42598 210 14 BG
10 0.00082 0.48889 106 21 LT
11 0.00086 0.44371 924 15 IL
12 0.00121 0.36694 322 10 MY
13 0.00132 0.44558 457 15 HK
14 0.00149 0.36790 2476 13 JP
15 0.00228 0.46123 58 15 LV
16 0.00387 0.43354 317 21 RU
17 0.00442 0.50838 3110 18 NL
18 0.00501 0.39061 849 19 ZA
19 0.01014 0.39549 1164 19 IT
20 0.01221 0.37852 822 21 SG
21 0.01281 0.35176 152 17 ID
22 0.01616 0.42329 1349 7 NZ
23 0.01740 0.28221 15 11 MD
24 0.02012 0.42425 1449 21 KR
25 0.02016 0.50682 2559 25 HU
26 0.02413 0.41825 104 10 CY
27 0.03081 0.38852 163 23 CL
28 0.03209 0.37570 248306 19 US
29 0.03316 0.29086 47 0 MK
30 0.09642 0.51348 489 7 RO
31 0.13844 0.36389 152 31 IR
32 0.17346 0.30604 541 -12 PH
33 0.20503 0.64834 17 25 TN
34 0.61424 0.25671 37 -18 JO


TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

The UNIVARIATE Procedure
Variable: dffit (Standard Influence on Predicted Value)

Moments
N 29 Sum Weights 29
Mean -0.0529651 Sum Observations -1.5359892
Std Deviation 0.34742662 Variance 0.12070526
Skewness -1.7354103 Kurtosis 4.73275728
Uncorrected SS 3.46110115 Corrected SS 3.37974726
Coeff Variation -655.95333 Std Error Mean 0.0645155

Basic Statistical Measures
Location Variability
Mean -0.05297 Std Deviation 0.34743
Median 0.01318 Variance 0.12071
Mode . Range 1.85020
    Interquartile Range 0.24803

Tests for Location: Mu0=0
Test Statistic p Value
Student's t t -0.82097 Pr > |t| 0.4186
Sign M 1.5 Pr >= |M| 0.7111
Signed Rank S -0.5 Pr >= |S| 0.9916

Quantiles (Definition 5)
Quantile Estimate
100% Max 0.5779063
99% 0.5779063
95% 0.2530706
90% 0.2505493
75% Q3 0.1555586
50% Median 0.0131754
25% Q1 -0.0924699
10% -0.6321062
5% -0.6363919
1% -1.2722947
0% Min -1.2722947

Extreme Observations
Lowest Highest
Value Obs Value Obs
-1.272295 6 0.198422 30
-0.636392 7 0.199517 31
-0.632106 8 0.250549 32
-0.454127 9 0.253071 33
-0.255695 10 0.577906 34

Missing Values
Missing
Value		 Count Percent Of
All Obs Missing Obs
. 5 14.71 100.00 

    Stem Leaf                     #             Boxplot                                   Normal Probability Plot               
       4 8                        1                0                    0.5+                                       +++++ *      
       2 0055                     4                |                       |                                 +++++*  *          
       0 11245904668             11             +-----+                    |                        ********+*** *              
      -0 8975543                  7             +--+--+                -0.1+                 * *****+++                         
      -2 62                       2                |                       |               **++++                               
      -4 5                        1                |                       |          +++*++                                    
      -6 43                       2                0                   -0.7+    +++++*  *                                       
      -8                                                                   |++++                                                
     -10                                                                   |                                                    
     -12 7                        1                *                   -1.3+     *                                              
         ----+----+----+----+                                               +----+----+----+----+----+----+----+----+----+----+ 
     Multiply Stem.Leaf by 10**-1                                               -2        -1         0        +1        +2


TIMSS Regression Diagnostics
Weighted
1999 science difference ON IAT

Obs dffit iat_mean iat_n BGsciDIFF99 countrycitzn
1 . 0.39784 55 . SI
2 . 0.39817 1502 . NO
3 . 0.44593 5649 . SE
4 . 0.40781 8194 . AU
5 . 0.39527 15471 . UK
6 -1.27229 0.25671 37 -18 JO
7 -0.63639 0.64834 17 25 TN
8 -0.63211 0.30604 541 -12 PH
9 -0.45413 0.51348 489 7 RO
10 -0.25569 0.29086 47 0 MK
11 -0.21866 0.41825 104 10 CY
12 -0.17985 0.42329 1349 7 NZ
13 -0.09247 0.50838 3110 18 NL
14 -0.06645 0.46123 58 15 LV
15 -0.05055 0.44558 457 15 HK
16 -0.04824 0.36694 322 10 MY
17 -0.04076 0.44371 924 15 IL
18 -0.03055 0.42598 210 14 BG
19 0.00714 0.44178 425 17 TW
20 0.01318 0.45299 1286 18 BE
21 0.02423 0.49977 69 21 SK
22 0.03986 0.48889 106 21 LT
23 0.05361 0.36790 2476 13 JP
24 0.08682 0.43354 317 21 RU
25 0.09883 0.39061 849 19 ZA
26 0.14100 0.39549 1164 19 IT
27 0.15556 0.37852 822 21 SG
28 0.15849 0.35176 152 17 ID
29 0.18398 0.28221 15 11 MD
30 0.19842 0.50682 2559 25 HU
31 0.19952 0.42425 1449 21 KR
32 0.25055 0.38852 163 23 CL
33 0.25307 0.37570 248306 19 US
34 0.57791 0.36389 152 31 IR