HP 33s - Manual (Page 263)

Statistics Programs 16–3
Program Listing:
Program Lines:
(In RPN mode)
Description
   This routine sets, the status for the straight–line model.
  Enters index value for later storage in i (for indirect
addressing).
 
 Clears flag 0, the indicator for ln X.
   Clears flag 1, the indicator for In Y.
 ! ' Branches to common entry point Z.
Checksum and length: E3F5 27

   This routine sets the status for the logarithmic model.

  Enters index value for later storage in i (for indirect
addressing).

 
 Sets flag 0, the indicator for ln X.

   Clears flag 1, the indicator for ln Y

 ! ' Branches to common entry point Z.
Checksum and length: F78E 27

   This routine sets the status for the exponential model.

  Enters index value for later storage in i (for indirect
addressing).

 
 Clears flag 0, the indicator for ln X.

   Sets flag 1, the indicator for ln Y.

 ! ' Branches to common entry point Z.
Checksum and length: 293B 27
   This routine sets the status for the power model.
  Enters index value for later storage in i (for indirect
addressing.)
 
 Sets flag 0, the indicator for ln X.
   Sets flag 1, the indicator for ln Y.
Checksum and length: 43AA 24
'
  ' Defines common entry point for all models.
'
 ´ Clears the statistics registers.
'
 ! L Stores the index value in i for indirect addressing.