TM 5-6675-317-14
Keystrokes
Display
6.0000
8.
3.0000
(3) Mean.
II
Pressing x computes the arithmetic
accumulated in registers R.1 and R.3 respectively.
Correcty value is entered.
x value is entered again.
Number of entries is again
three.
mean (average) of x and y values
Pressing
q
~ causes the following operations to be performed.
The contents of the stack registers are lifted just as they are when
pressing I@ .
The
registers R1 (
register.
mean of the x values (!) is calculated using data accumulated in
X x) and R.O (n).
The resulting value for x appears in displayed X-
regi
The mean of y values (~) is calculated using data accumulated in
sters R.3
I
XY) and R.O (n).
resulting value for y is available in Y-register of stack.
The
Example:
week.
Below is a chart of daily high and low temperatures for a winter
Sun
Mon
Tues
Wed
Thurs Fri Sat
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
0.0000
1.0000
11 Em 17
17.
2.0000
14 m 15
15.
Statistical registers
cleared.
(Display shown
assumes no results remain
from previous calculations.)
Number of data pairs (n) is
now 1.
Number of data pairs (n) is
now 2.
6-30
