A SERVICE OF

logo

Open as PDF
next previous
Operation Index G–3
Name Keys and Description Page ¼
Σ
+
Accumulates (y, x) into
statistics registers.
11–2
Σ
–
{
Removes (y, x) from
statistics registers.
11–2
Σ
x
|
{
;º
}
Returns the sum of x–values.
11–10 1
Σ
x
2
|
{
;º
}
Returns the sum of squares of
x–values.
11–10 1
Σ
xy
|
{
;º¸
}
Returns the sum of products of
x–and y–values.
11–10 1
Σ
y
|
{
;¸
}
Returns the sum of y–values.
11–10 1
Σ
y
2
|
{
;¸
}
Returns the sum of squares of
y–values.
11–10 1
σ
x
|
{
σ
º
}
Returns population standard
deviation of x–values:
nxx
i
÷−
¦
2
)(
11–6 1
σ
y
|
{
σ
¸
}
Returns population standard
deviation of y–values:
nyy
i
÷−
¦
2
)(
11–6 1
θ
, r
y,x
|s
Polar to rectangular coordinates.
Converts (r,
θ
) to (x, y).
4–9