TM 5-6675-325-14
Keystrokes
Display
q
lEml
6.0000
Correct y value is entered.
III
8.
x value is entered again.
El
3.0000
Number of entries is again
three.
(3) Mean.
Pressing ~ computes the arithmetic mean (average) of x and y values
accumulated in registers R.1 and R.3 respectively.
Pressing q ~ causes the following operations to be performed.
The contents of the stack registers are lifted just as they are when
pressing ~ .
The mean of the x values (~) is calculated using data accumulated in
registers R1 ( z X) and R.0 (n).
The resulting value for x appears in displayed X-
register.
The mean of y values (~) is calculated using data accumulated in
registers R.3 ( Z y) and R.O (n).
The resulting value for y is available in Y-register of stack.
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
High
6
11
14
Low
-22
-17
-15
Keystrokes
Display
q
m
n
0.0000
Wed
Thurs Fri Sat
12
5
-2
-9
-9
-24
-29 -35
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.
7-30
