A system for doing
linear regression.

Enter or Paste data into the appropriate columns from your favourite graphing programme.  A linear regression of the form   y  =  mx + b
can  be calculated from the menus. At present the maximum  number of points is 40 but  this may be increased to any value if you contact me.

An un-weighted fit:
Ignore the y error data column. (i.e leave all blank ).

A weighted fit: 
Only errors in y are supported.