TM 5-6675-325-14
Keystrokes
Display
3.0000
9.
4.0000
5.0000
-9.0000
7.0000
-21.5714
5.2857
Number of data pairs (n) is
now 7.
Average low temperature.
Average high temperature.
(4) Standard deviation.
(a) Pressing E computes the standard deviation (a
around the mean) of’ accumulated data.
(b) When El El is pressed:
The contents of stack registers are lifted just as
mEl*
measure of dispersion
they are when pressing
The standard deviation of x values (sx) is calculated using data
accumulated in registers R.2 (2), R.1 ( ~ ), and R.O (n). The result appears in
displayed X-register.
The standard deviation of y values (s.,) is calculated using data accumu-
lated in registers R.4 (y2), R.3 (y), and R.0
register.
Example:
To determine the standard devi
79, 94, 68, 86, 82, 78, 83, and 89, press
Keystrokes
Display
f CLEAR ALL
0.0000
(n). The result appears in Y-
ation of the following test scores:
Clear statistical registers
and Y-register for new,
one-variable problem.
7-31
