MTB > Note.  Bill Qualls - KGSM - GM533
MTB > Note.  Exercise #3.29, page 112
MTB > Note.  McClave & Benson, 5th edition
MTB > Note.  This is file MB-3-29.MTB
MTB >  
MTB > set into c1
DATA> 43 45 42 42 40 40
DATA> 40 40 42 41 40 37
DATA> 38 41 41 38 40 41
DATA> 39 41 39 43 41 40
DATA> 35 39 42 37 41 44
DATA> 40 37 36 39 38 40
DATA> end
MTB >  
MTB > name c1 as 'MPG'
MTB >  
MTB > dotplot c1

                                     .
                                     :    .
                                     :    :
                      .    .    :    :    :    :
            .    .    :    :    :    :    :    :    :    .    .
          -------+---------+---------+---------+---------+---------MPG     
              36.0      38.0      40.0      42.0      44.0      46.0

MTB >  
MTB > describe c1

                N     MEAN   MEDIAN   TRMEAN    STDEV   SEMEAN
MPG            36   40.056   40.000   40.063    2.177    0.363

              MIN      MAX       Q1       Q3
MPG        35.000   45.000   39.000   41.000

MTB >  
MTB > tinterval c1

             N      MEAN    STDEV  SE MEAN   95.0 PERCENT C.I.
MPG         36    40.056    2.177    0.363  (  39.319,  40.792)