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45-734 PROBABILITY AND STATISTICS II (4th Mini AY1997-98)

Note Set 4 Handouts

  1. REFRIG4.WF1 Examples.

    LS PRICE C OPCOST REFRSIZE FREZSIZE SHELVES FEATURES 
    ============================================================
LS // Dependent Variable is PRICE                                     
Date: 04/04/98   Time: 22:45                                          
Sample: 1 37                                                          
Included observations: 37                                             
============================================================
      Variable      CoefficienStd. Errort-Statistic  Prob.            
============================================================
         C          -797.8082   271.4093  -2.939502   0.0062          
       OPCOST       -6.957842   2.275304  -3.057983   0.0046          
      REFRSIZE       76.49709   19.44152   3.934727   0.0004          
      FREZSIZE       137.3814   23.76313   5.781283   0.0000          
      SHELVES        37.93728   9.886151   3.837417   0.0006          
      FEATURES       23.76355   4.511674   5.267126   0.0000          
============================================================
R-squared            0.837901    Mean dependent var 626.3514          
Adjusted R-squared   0.811756    S.D. dependent var 139.7898          
S.E. of regression   60.65065    Akaike info criter 8.357654          
Sum squared resid    114033.5    Schwarz criterion  8.618884          
Log likelihood      -201.1173    F-statistic        32.04832          
Durbin-Watson stat   2.321390    Prob(F-statistic)  0.000000          
============================================================

    HIST RESID

    The p-value for the Jarque-Bera statistic is 0.573321 so we would not reject the null hypothesis that the residuals are normally distributed.

    SCAT(R) PRICE OPCOST