TM 5-6675-313-14
3.0000
9.
4.0000
24.
5.0000
-2.0000
6.0000
-9 l 0000
7.0000
-21.5714
5.2857
(4) Standard deviation.
(a) Pressing
q
computes the standard deviation (a
around the mean) of accumulated data.
(b) When E
q
is pressed:
Number of data pairs (n) is
now 7.
Average low temperature.
Average high temperature.
The contents of stack registers are lifted just as
mD.
measure of dispersion
they are when pressing
The standard deviation of x values (sx) is calculated usin data
accumulated in registers R.2 (2), R.1 ( Z ), and R.0 (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 ({). The result appears in Y-
register.
Example:
To determine the
79, 94, 68, 86, 82, 78, 83, and
Keystrokes
Display
q
CLEAR ALL
0.0000
standard deviation of the following test scores:
89, press
Clear statistical registers
and Y-register for new,
one-variable problem.
6-31
