TM 5-6675-322-14
Keystrokes
D i s p l a y
3.0000
9.
4.0000
24
24.
5.0000
-2.0000
6.0000
-9.0000
7.0000
-21.5714
5.2857
( 4 ) S t a n d a r d d e v i a t i o n.
(a) Pressing computes the
around the mean) of accumulated data.
(b) When is pressed:
Number of data pairs (n) is
now 7.
Average low temperature.
Average high temperature.
standard deviation (a measure of dispersion
The contents of stack registers are lifted just as they are when pressing
The standard deviation of x values is calculated using data
accumulated in registers R.2 ( 2), R.1 , and R.0 (n). The result appears in
d i s p l a y e d X - r e g i s t e r.
The standard deviation of y values (s ) is calculated using data accumu-
lated in registers R.4 (y2), R.3 ( y), and R.0 (n). The result appears in Y -
r e g i s t e r.
Example:
To determine the standard deviation of the following test scores:
79, 94, 68, 86, 82, 78, 83, and 89, press
Keystrokes
D i s p l ay
CLEAR ALL
0.0000
C l e a r s t a t i s t i c a l r e g i s t e rs
and Y-register for new,
one-variable problem.
3-31
