HP 33s - Manual (Page 278)

16–18 Statistics Programs
Program Listing:
Program Lines:
(In ALG mode)
Description
  Start grouped standard deviation program.
; Clears statistics registers (28 through 33).


 !  Clears the count N.
Checksum and length: EF85 24

 Input statistical data points.

 "!% Stores data point in X.

 "! Stores data–point frequency in F.

 Enters increment for N.

 ! 

  Recalls data–point frequency f
i
.
Checksum and length: 184C 30

  Accumulate summations.

 

 ! L  Stores index for register 28.

  

 ! -1L2  Updates
¦
i
f in register 28.

 h% 
i i
f x

! 

 ! ' 

 


 ! L  Stores index for register 29.

 ' 

 ! -1L2  Updates
¦
i i
f x in register 29.

 h% 
i
2
i
f x

! 

 ! '  Stores index for register 31.

  


 ! L 

  '