HP 33s - Manual (Page 273)

Statistics Programs 16–13
Program Lines:
(In RPN mode)
Description
!

! - % Adds the correction to yield a new X
guess
.
!
  
!

)

!
 º6¸@ Tests to see if the correction is significant.
!
 ! ! Goes back to start of loop if correction is significant.
Continues if correction is not significant.
!
  %
!
 #$ % Displays the calculated value of X.
!

!  Loops to calculate another X.
Checksum and length: 0E12 63
   This subroutine calculates the upper–tail area Q(x).
   Recalls the lower limit of integration.
  % Recalls the upper limit of integration.
 /  Selects the function defined by LBL F for integration.
 ³  G  Integrates the normal function using the dummy variable
D
.

π
º
 º

º  Calculates S × π
2 .
 ! ! Stores result temporarily for inverse routine.
 ª
 -+.

)
 - Adds half the area under the curve since we integrated
using the mean as the lower limit.
 ! Returns to the calling routine.
Checksum and length: FA83 72

   This subroutine calculates the integrand for the normal
function
2 ) ) (( 2 ч ч − − S M X e

  

 .