HP 33s - Manual (Page 267)

Statistics Programs 16–7
Program Lines:
(In RPN mode)
Description

! !

!¸
%


! º! Calculates Y= B(X
M
).

! ! Returns to the calling routine.
Checksum and length: 018C 18

   This subroutine calculates xˆ for the power model.

 ! . L Restores index value to its original value.

  &

 ª 

  

+º

¸
%
 Calculates xˆ = (Y/B)
1/M

! Returns to the calling routine.
Checksum and length: 3040 24
Flags Used:
Flag 0 is set if a natural log is required of the X input. Flag 1 is set if a natural log
is required of the Y input.
Program instructions:
1. Key in the program routines; press ‡ when done.
2. Press X and select the type of curve you wish to fit by pressing:
„ S for a straight line;
„ L for a logarithmic curve;
„ E for an exponential curve; or
„ P for a power curve.
3. Key in x –value and press g .
4. Key in y –value and press g .