TM 5-6675-313-14
Keystrokes
Display
6.0000
8.
3.0000
c1
(3) Mean. Pressing 1
accumulated in registers R.1
Correct y value is entered.
x value is entered again.
Number of entries is again
three.
computes the arithmetic mean (average) of x and y values.
and R.3 respectively.
o
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 mean of the x values (~) is calculated using data accumulated in
registers R1 ( ~ 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.0 (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.
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
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
