% Data for Example 2
%
%Serial    x       sd_x           y      sd_y        covariance
  1      -40.0    1.414213562   -24.0   1.732050808	    0.5
  2      -15.0    2.828427125   -24.0   2.236067978    -4.0
  3       10.0    2.828427125   -12.0   2.645751311    -3.0
  4       38.0    1.0            15.0   1.414213562     0.5
  5       67.0    2.449489743    30.0   3.464101615     1.0