TM 5-6675-321-14
Keystrokes
D i s p l ay
6.0000
El
8.
q
3.0000
(3) Mean.
D
P r e s s i n g x computes the arithmetic
accumulated in registers R.1 and R.3 respectively .
C o r r e c t y v a l u e i s e n t e r e d .
x value is entered again.
Number of entries is again
t h r e e .
mean (average) of x and y values
P r e s s i n g q ~ causes the following operations to be performed.
The contents of the stack registers are lifted just as they are when
p r e s s i n g ~ .
The mean of the x values (~) is calculated using data accumulated in
r e g i s t e r s R1 ( ~ x ) a n d R . 0 ( n ) .
The resulting value for-x appears in displayed X-
r e g i s t e r .
The mean of y values (~) is calculated using data accumulated in
r e g i s t e r s R . 3 ( Z y ) a n d R . 0 ( n ).
T h e r e s u l t i n g v a l u e f o r y i s a v a i l a b l e i n Y - r e g i s t e r o f s t a c k.
Example:
Below is a chart of daily high and low temperatures for a winter
week.
Sun
Mon
Tues
Wed
T h u r s F r i S a t
High
6
11
14
12
5
-2
-9
Low
-22
-17
-15
-9
-24
-29
-35
To find average high and low temperatures for week selected, press;
Keystrokes
Display
q
mn
0.0000
S t a t i s t i c a l r e g i s t e r s
c l e a r e d . ( 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 . )
El Eiim
22
22.
El
El
1.0000
11
m
17
17.
m
n
2.0000
14
m 15
15.
Number of data pairs (n) is
now 1.
Number of data pairs (n) is
now 2.
6-30
