Page 101 - Basic Statistics
P. 101

96




                     Table  5.5     The analysis of variance

                       Source of    Sum of      Degrees         Mean
                       variation    squares        of          Squares             F
                                      (SS )     Freedom         ( MS )

                      Regression  .............    ....     .............

                      Residual     .............   ....     .............   F = .............

                      Total        .............   ....




                     Test  results:  F  >  F(;1;n-2),  ie  ........  >  .........,  then  H 0  is  ............  at  the  5  percent


                     significance level.. It was concluded that...................................................................





                     c.  The coefficient of determination:


                               2
                              R    = SS(Reg) / SS(Total)


                                   = ………… / …………
                                   = …………



                     The interpretation of  is that .......... % of the variation in the dependent variable

                     is “ explained” by its linear relationship with the independent variable.


                     d. Testing of the coefficient  1



                            H 0  :   1 = 0


                            H 1  :   1  0



                                                                2
                     Variance:     S ˆ     =   MS(Res)   /     (   X −    (     X  )    2  /  ) n
                                     β 1                        j         j





                                         ~~* CHAPTER 5   LINEAR REGRESSION MODEL *~~
   96   97   98   99   100   101   102   103   104   105   106