1000 Sample Means with 50 Obs per Sample           1
             Drawn from an Exponential Distribution

   Frequency

   300 +
       |
       |
       |                     *
       |                   * *
   250 +                   * *
       |                   * *
       |                   * *
       |                   * *
       |                   * *
   200 +                   * *
       |                   * *
       |                 * * *
       |                 * * *
       |                 * * *
   150 +                 * * * *
       |                 * * * *
       |                 * * * *
       |                 * * * *
       |                 * * * *
   100 +                 * * * *
       |                 * * * *
       |                 * * * *
       |               * * * * *
       |               * * * * * *
    50 +               * * * * * *
       |               * * * * * *
       |               * * * * * *
       |               * * * * * * *
       |             * * * * * * * *
       ------------------------------------------------------
         0         0         1         1         2         2
         .         .         .         .         .         .
         0         5         0         5         0         5
         5         5         5         5         5         5

                            Mean Midpoint