TM 5-6675-324-14
Keystrokes
Display
Correct y value is entered.
6.0000
x value is entered again.
8.
Number of entries is again
3.0000
three.
(3) Mean. Pressing
computes the arithmetic mean (average) of x and y values
accumulated in registers R.1 and R.3 respectively.
causes the following operations to be performed.
Pressing
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
x) and R.0 (n). The resulting value for x appears in displayed X-
registers R1 (
register.
The mean of y values
is calculated using data accumulated in
registers R.3 (
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. To find average high and low temperatures for week selected, press:
Mon
Tues
Sun
Wed Thurs Fri Sat
6
11
14
High
12
5
-2
-9
Low
-22
-17
-15
-9
-24
-29
-35
Keystrokes
Display
Statistical registers
0.0000
cleared. (Display shown
assumes no results remain
from previous calculations.)
22.
Number of data pairs (n) is
1.0000
now 1.
17.
Number of data pairs (n) is
2.0000
now 2.
15.
7-30
