HP 35s

Operation Index G-3
Σx
2
 ÕÕÕ (

)
Returns the sum of squares of x–
values.
12–11 1
Σxy
ÕÕÕÕÕ
()
Returns the sum of products of x–and
y–values.
12–11 1
Σy
 ÕÕ ()
Returns the sum of y–values.
12–11 1
Σy
2
 ÕÕÕÕ (

)
Returns the sum of squares of y–
values.
12–11 1
σx
 ÕÕ (σ)
Returns population standard
deviation of x–values:
12–7 1
σy
 ÕÕÕ (σ)
Returns population standard
deviation of y–values:
12–7 1
∫ FN d variable
 ( ∫   _) variable
Integrates the displayed equation or
the program selected by FN=, using
lower limit of the variable of
integration in the Y–register and
upper limit of the variable of
integration in the X–register.
8–2
15–7
( )
4parenthesis. press Õ to leave
the parenthesis for further
calculation.
6–6 1
[ ]
3: A vector symbol for
performing vector operations
10–1 1
θ
?: A complex number symbol
for performing complex number
operations
9–1 1
Name Keys and Description Page

nxx
i
÷−
∑
2
)(
nyy
i
÷−
∑
2
)(