HP 33S - Page 370

G–18 Operation Index
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Name Keys and Description Page 
x
w Returns weighted mean of x
values: (
Σ
y
i
x
i
)
÷ Σ
y
i
.
11–4 1
º (
Displays the mean (arithmetic
average) menu.
11–4
x<> variable
º v
x exchange.
Exchanges x with a variable.
3–6
x<>y
w
x exchange y.
Moves x to the Y–register and y to
the X–register.
2–4
¹ ¬
Displays the "x
?
y" comparison
tests menu.
13–7
x
≠
y
¹ ¬
{
≠
}
If x
≠
y, executes next program line;
if x=y, skips next program line.
13–7
x
≤
y
?
¹ ¬
{
≤
}
If x
≤
y, executes next program line;
if x
>
y, skips next program line.
13–7
x<y
?
¹ ¬
{<}
If x<y, executes next program line;
if x
≥
y, skips next program line.
13–7
x>y
?
¹ ¬
{>}
If x>y, executes next program line;
if x
≤
y, skips next program line.
13–7
x
≥
y
?
¹ ¬
{
≥
}
If x
≥
y, executes next program line;
if x<y, skips next program line.
13–7
x=y
?
¹ ¬
{

}
If x=y, executes next program line;
if x
≠
y, skips next program line.
13–7
º 
Displays the "x
?
0" comparison
tests menu.
13–7