HP 33s - Manual (Page 272)

16–12 Statistics Programs
Program Listing:
Program Lines:
(In RPN mode)
Description
This routine initializes the normal distribution program.
Stores default value for mean.
!
"! Prompts for and stores mean, M.
Stores default value for standard deviation.
!
"! Prompts for and stores standard deviation, S.
! Stops displaying value of standard deviation.
Checksum and length: D72F 48
This routine calculates Q(X) given X.
"! % Prompts for and stores X.
% Calculates upper tail area.
! Stores value in Q so VIEW function can display it.
#$ Displays Q(X).
! Loops to calculate another Q(X).
Checksum and length: EA54 18
This routine calculates X given Q(X).
"! Prompts for and stores Q(X).
Recalls the mean.
! % Stores the mean as the guess for X, called X
guess
.
Checksum and length: 79B9 12
!
! This label defines the start of the iterative loop.
!
% Calculates (Q( X
guess
)– Q(X)).
!
.
!
%
!
!
!
¶
!
% Calculates the derivative at X
guess
.
!
ª !
!
ª Calculates the correction for X
guess
.