TM5-6675-326-14
8-6.12.1 Accumulations - Continued
This
Keystrokes
b .
I f s t a t i s t i c a l p r o b l e m i n v o l v e s o n l y o n e v a r i a b l e ( x ) , c l e ar
storage registers R .
(1) Key number into X-register.
( 2 ) Press~.
NOTE
Unlike storage register arithmetic, the accumulation
operation allows overflows (i.e., number whose
magnitudes are greater than 9.99999999 x 1099) in
s t o r a g e r e g i s t e r s R.0 t h r o u g h R.5 w i t h o u t i n d i c a t i ng
Error 1 in the display.
c. To use any of the accumulations, recall contents of desired
storage register into displayed X-register by pressing ~
q f o l l o w e d b y t h e n u m b e r o f t h e r e g i s t e r . I f t h i s i s d o ne
immediately after presslng~or S-, t h e a c c u m u l a t i on
recalled is written over the number of data pair entries (n)
i n t h e d i s p l a y.
To use both 2X and ~y , press
s i m u l t a n e o u s l y c o p i e s 2X from R.1 into displayed X-register
a n d c o p i e s XY from R.3 i n t o Y - r e g i s t e r .
I f t h i s i s d o ne
i m m e d i a t e l y a f t e r pressing~ , ~-, ~ , or 1-1,
t h e n u m b e r i n t h e Y - r e g i s t e r i s f i r s t l i f t e d i n to
Z - r e g i s t e r.
Otherwise,
the numbers in the X- and
Y - r e g i s t e r s a r e f i r s t l i f t e d i n t o Z - a n d T - r e g i s t e r s,
r e s p e c t i v e l y.
Example:
T o f i n d 2x, 2X2,
~y, 2y2, a n d Zxy f o r t h e
paired values of x and y listed below, press
y
7
5
9
x
5
3
8
Display
0.0000
7.0000
C l e a r s t a t i s t i c a l s t o r a ge
r e g i s t e r s . ( D i s p l a y s h o wn
assumes no results remain
f r o m p r e v i o u s c a l c u l a t i o n s .)
8-19
