MON 3/15/99 3:07:00 PM
SYSTAT VERSION 7.0.1
COPYRIGHT (C) 1997, SPSS INC.
Welcome to SYSTAT!
>USE 'C:\SYSTAT7\S209\GRAD.SYD'
SYSTAT Rectangular file C:\SYSTAT7\S209\GRAD.SYD,
created Wed Feb 17, 1999 at 08:32:46, contains variables:
ID STATE$ GRAD INC PWHI PBLA
PHIS EDEXP URB
The following commands estimate the regression model and save residual
diagnostics ("resid") and partial residuals ("partials") in
the file 'gradres.syd'.
>mglh
>model grad = constant + inc + pbla + phis + edexp + urb
>save 'c:\systat7\s209\gradres.syd'/resid partials
>estimate
Dep Var: GRAD N: 51 Multiple R: 0.789987 Squared multiple R: 0.624080
Adjusted squared multiple R: 0.582311 Standard error of estimate: 5.139480
Effect Coefficient Std Error Std Coef Tolerance t P(2 Tail)
CONSTANT 69.041990 5.372707 0.0 . 12.85050 0.00000
INC 0.001785 0.000802 0.415557 0.239575 2.22541 0.03111
PBLA -0.414116 0.062532 -0.652242 0.861206 -6.62248 0.00000
PHIS -0.407305 0.116939 -0.334460 0.905975 -3.48305 0.00112
EDEXP -0.001319 0.001398 -0.147477 0.341964 -0.94357 0.35043
URB -0.108312 0.046031 -0.306893 0.491086 -2.35301 0.02305
Analysis of Variance
Source Sum-of-Squares df Mean-Square F-ratio P
Regression 1973.308473 5 394.661695 14.941241 0.000000
Residual 1188.641331 45 26.414252
*** WARNING ***
Case 2 has large leverage (Leverage = 0.409295)
Case 9 has large leverage (Leverage = 0.587305)
Case 32 has large leverage (Leverage = 0.604821)
Durbin-Watson D Statistic 2.014
First Order Autocorrelation -0.020
Residuals have been saved.
-------------------------------------------------------------------------------
>USE 'C:\SYSTAT7\S209\GRADRES.SYD'
SYSTAT Rectangular file C:\SYSTAT7\S209\GRADRES.SYD,
created Mon Mar 15, 1999 at 15:13:32, contains variables:
ESTIMATE RESIDUAL LEVERAGE COOK STUDENT SEPRED
YPARTIAL(1..5) XPARTIAL(1..5)
The next 3 commands create the partial regression plots; the options after the
/ are nonessential. ("influence" requests an influence plot with the size of the
symbol proportional to the influence of a case; "stick" to have tick marks stick
out; "smooth=linear" to draw the partial regression line; "short" to limit the
regression line to the range of data on the X axis.)
>plot ypartial(1)*xpartial(1)/influence stick smooth=linear short
>plot ypartial(2)*xpartial(2)/influence stick smooth=linear short
>plot ypartial(3)*xpartial(3)/influence stick smooth=linear short
Last modified 15 March 1999