HP 35s Scientific Calculator - Manual (Page 355)

Operation Index G-3
Σx 2
 ÕÕÕ (

)
Returns the sum of squares of x–
values.
12–11 1
Σxy
ХХХХХ
()
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  ХХХХ (  )
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
( ) 4
parenthesis. 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
n x x
i
÷ −
∑
2 ) (
n y y
i
ч −
∑
2 ) (