how come when you do a pdf on a unit norm distribution and one say, where 
mean is 100 and sd = 15 ... you get different pdf values along the Y 
axis??? is it just because the lenght of the continuity along X is 
narrower/wider?

   0.030+
          -
  C2      -                           * *  *
          -
          -                        *         *
     0.020+
          -
          -                      *              *
          -
          -
     0.010+                   *                   *
          -
          -                 *                        *
          -              *                             *
          -            *                                  *
     0.000+    *  * *                                       *  * *
            --------+---------+---------+---------+---------+--------C1
                   60        80       100       120       140

MTB > plot c4 c3

Plot


          -
      0.45+
          -
  C4      -                             *  *
          -                          *
          -                                  *
      0.30+                       *
          -
          -                     *               *
          -
          -                                        *
      0.15+                  *
          -                                           *
          -               *
          -            *                                *
          -          *                                     *
      0.00+    *  *                                           *  *
            --------+---------+---------+---------+---------+--------C3
                 -2.4      -1.2       0.0       1.2       2.4

MTB >




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