HP 33s - Manual (Page 264)

16–4 Statistics Programs
Program Lines:
(In RPN mode)
Description
'

 Sets the loop counter to zero for the first input.
Checksum and length: 5AB9 24
$
  $ Defines the beginning of the input loop.
$
  Adjusts the loop counter by one to prompt for input.
$
 -
$
 ! % Stores loop counter in X so that it will appear with the
prompt for X.
$
  "! % Displays counter with prompt and stores X input.
$
 @
 If flag 0 is set . . .
$
 . . . takes the natural log of the X–input.
$
!  Stores that value for the correction routine.
$
 "! & Prompts for and stores Y.
$

 @  If flag 1 is set . . .
$
  . . . takes the natural log of the Y–input.
$
 ! 
$
  
$
 ´- Accumulates B and R as x,y–data pair in statistics registers.
$
 ! $ Loops for another X, Y pair.
Checksum and length: C95E 57
"
  " Defines the beginning of the "undo" routine.
"
   Recalls the most recent data pair.
"
  
"
 ´. Deletes this pair from the statistical accumulation.
"
 ! $ Loops for another X, Y pair.
Checksum and length: AB71 15
   Defines the start of the output routine
 T Calculates the correlation coefficient.
 !  Stores it in R.
 #$ Displays the correlation coefficient.
 E Calculates the coefficient b.
 @  If flag 1 is set takes the natural antilog of b.
H
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