Group Statistics
GT1           N         Mean          Std. Deviation     Std. Error Mean
YDSD   Nam               162      3.8148             .77204                .06066
       Nữ                219      3.8228             .73224                .04948
                               Independent Samples Test
                                           Levene's Test for Equality of               t-test for Equality of
                                                    Variances                                   Means
                                               F                  Sig.                    t                df
YDSD   Equal variances assumed                      .007                  .931                -.103             379
       Equal variances not                                                                    -.102       336.510
       assumed
                                     Independent Samples Test
                                                                 t-test for Equality of Means
                                                                                                                95% Confidence
                                                                                                                 Interval of the
                                                                                         Std. Error               Difference
                                       Sig. (2-tailed)     Mean Difference               Difference                   Lower
YDSD   Equal variances assumed                      .918              -.00802                         .07766             -.16072
       Equal variances not assumed                  .918              -.00802                         .07828             -.16199
                                     Independent Samples Test
                                                                                              t-test for Equality of Means
                                                                                         95% Confidence Interval of the
                                                                                                        Difference
                                                                                                          Upper
YDSD             Equal variances assumed                                                                                  .14468
                 Equal variances not assumed                                                                              .14596
                         Test of Homogeneity of Variances
                                      Levene Statistic          df1              df2              Sig.
YDSD   Based on Mean                                .812              3                377              .488
       Based on Median                              .837              3                377              .474
       Based on Median and with                     .837              3      373.614                    .474
       adjusted df
         Based on trimmed mean                  .817           3       377          .485
                                    ANOVA
YDSD
                   Sum of Squares    df         Mean Square        F         Sig.
Between Groups              1.905           3           .635       1.135        .335
Within Groups             210.951         377           .560
Total                     212.856         380