HP 33S Owner's Manual

Operation Index
G–3
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
Name Keys and Description Page 
Σ
+
/
Accumulates (y, x) into
statistics registers.
11–2
Σ
–
¹ -
Removes (y, x) from
statistics registers.
11–2
Σ
x
º .
{

}
Returns the sum of x–values.
11–11 1
Σ
x
2
º .
{


}
Returns the sum of squares of
x–values.
11–11 1
Σ
xy
º .
{

}
Returns the sum of products of
x–and y–values.
11–11 1
Σ
y
º .
{

}
Returns the sum of y–values.
11–11 1
Σ
y
2
º .
{


}
Returns the sum of squares of
y–values.
11–11 1
σ
x
º +
{
σ

}
Returns population standard
deviation of x–values:
nxx
i
÷−
∑
2
)(
11–6 1
σ
y
º +
{
σ

}
Returns population standard
deviation of y–values:
nyy
i
÷−
∑
2
)(
11–6 1
θ
, r

y,x
º ±
Polar to rectangular coordinates.
Converts (r,
θ
) to (x, y).
4–9

HP 33S Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Silver
Digits	10 digits
Display number of lines	2 lines
Keyboard type	Alphanumeric
Menus and prompts	Yes

Weight and Dimensions

Dimensions (WxDxH)	157 x 16 x 81 mm