TM 5-6675-322-14
Keystrokes
D i s p l ay
6.0000
Correct y value is entered.
8 .
x value is entered again.
3.0000
Number of entries is again
t h r e e .
( 3 ) M e a n . P r e s s i ng
computes the arithmetic mean (average) of x and y values
accumulated in registers R.1 and R.3 respectively .
Pressing 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 (x) is calculated using data accumulated in
registers
R1 and
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 (y) is calculated using data accumulated in
registers
R.3
and
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.
To find average high and low temperatures for week selected, press
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
- 2 9 - 35
Keystrokes
D i s p l ay
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 w n
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 . )
22
22.
1.0000
14
15
17.
2.0000
11
17
15.
Number of data pairs (n) is
now 1.
Number of data pairs (n) is
now 2.
3-30