regresst

[Wendy Wang <wwang@xxxxxxxxxxxxx>]

Hi ferret_users,

I have 50-year data of PP (monthly means), and want to computer a
regression line.
The PP values are ~60, and period is 1950-2000.
But I have problem using the following:

  yes? LET p = pp
  yes? LET q = t[gt=pp]
  yes? SET GRID q
  yes? GO regresst

  yes? PLOT/SYM pp
  yes? PLOT/OVER qhat

when I do list for slope and
intercep, I got:
   -117   729122

Can someone help? Thanks.

Wendy Wang